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() : ( : 12) This section contains questions. : +3 (–1) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is correct.
Which of the following orbital is not possible :(A) 1d (B) 3g (C) 3f (D) All of these . () Choose the correct option for the quantum numbers of the last electron of 3p6. 2. 1.
(A) 4, 0, 0, +1/2
(B) 3, 1, –1, –1/2
1
(C) 4, 1, 0, –
2
(D) 3, 0, 1,
1 2
. () Arrange the electrons represented by the following set of quantum numbers in the decreasing order of 3. energy. (i) n = 4, l =0,m=0,s=+1/2 (ii)n=3, l = 1, m = 1, s = –1/2 (iii) n = 3, l =2,m=0,s=+1/2 (iv)n=3, l = 0, m = 0, s = –1/2 (A)iii
i> ii >iv (D) None . () 4.
Two substance x and y combine to give a substance z. The process is exothermic and z has properties different from those of x and y. Is the substance z. (A)anelement
(B)amixture
(C) acompound
(D) none
. ()
- () : ( : 20) This section contains questions. : +4 (0) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is (are) correct.
Which of the following statement is/are false (A) Lanthanum is the first element of lanthanides (B) Actinium violates the Aufbau’s principle (C) Chromium violates the pauli’s exclusion principle (D) Total 10 exchange are possible for d-electrons in Zn. . (,, ) 6. Choose the correct options from the following :(A) Cr and S have the same number of valence shell electrons 5.
(B) Cr and S have same number of unpaired electrons in their ground state. (C) Cr and S are the elements of same period (D) Cr is d-block and S is p-block element . (, ) 7. Select the statements ? (A) Two electrons in the same orbital have a higher energy than two electrons in different orbitals. (B) The multiplicity is the number of unpaired electron plus 1. (C) In the ground state of the atoms, the orbitals are filled in order of their decreasing energies. (D) The energy of an electron in a hydrogen atom si determined solely by its principal quantum number. . (, , ) 4/1
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8.
Select the statements ? (A) It should be noted that Hund's rules, though universally valid for ground state, do not always apply to excited states. (B) If electron has magnetic quantum number –1, then it can not be present in s-orbital (C) d-orbital contains 10 maximum electron
(D) 3d 2 2 have two nodal plane x -y . (, , ) Which of the following ions are paramagnetic in nature 9. +2
(A) Zn . (, )
+2
(B) Cu
+
+2
(C) Na
(D) Mn
() : ( : 9)
This section contains paragraphs. : +3 (0)
Based on each paragraph, there will be questions
Each question has options (A), (B), (C) and (D) of these four option(s) is correct. .10 .12 -1: Principal Quantum No. ‘n’ is defined as
1, 2, 3...........
-2: Azimuthal Quantum No. ‘ l ’ is defined as 1 to ( n + 2) in integral step -3: Magnetic Quantum No. ‘m’ is defined as
–
l
2
to +
l
2
(in integral steps) (including zero if any) 1 1 æ ö -4: Spin Quantum No. ‘s’ has six possible values ç -2,1 - -, + , + +,1 , 2 ÷ 2 2 è ø -5: The sub-shell corresponding to F,G,H,I,J,K...... respectively.
l
= 1, 2, 3, 4, 5,............are designated as
-6: The values of m for a given value of l give the number of orbitals is a sub-shell. -7: The principles for filling electrons in the shells remain unchanged.
On the basis of above information, answer the following questions. Last element of first period would be: (A) Zn (B) Na (C) Ga (D) Fe . () 11. For the element having atomic number ‘43’, the last electron enters in: 10.
1G (B) 2G (C) 2F (D) 1H . (A) () 12. The number of orbitals & the maximum number of electrons that can be filled is a J-sub-shell are respectively (A)6,36 (B)5,30 (C)4,24 (D)7,42 . ()
4/2
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: -
This Section contains . Each question has (A, B, C and D) given in and (P, Q, R & S) in . Any given statement in Column I can have
correct matching with or statement(s) given in C olumn II. For example, if for a given question, statement B matches with the statements given Q in and R, then for the particularquestion, against statement B, darken the bubbles corresponding toQ and R in the ORS. 1.
8(0)
- ( ) 3d
- ( )
4s
(A) [Ar]
(P) Pauli’s Exclusion principle is invalid
(B) [Ar]
(Q) Aufbau’s principle is invalid
(C) [Ar]
(R) Hund’s rule is invalid
(D) [Ar]
(S) All above rules are valid.
. ()-, , ()- , ; ()-,, () : ( : 40)
This section contains questions. : +4(–1)
The answer to each question is a ranging from 0 to 9, both inclusive
Find the (n + l) value for 4f orbital. 1. . 7 – 2. Find the number of ions having same number of e + – – 2– Na , F , Cl , O . 3 2 2 6 2 3 3. Find the sum of the value of ‘m’ for all electrons in 1s 2s 2p 3s 3p . 0 Find the Zeff value on the last electron entered into Sc. 4. . 3 Find the sum of the value of ‘m’ for all electrons in ‘P’ atom. 5. . 0 2+ 3+ 6. The ratio of unpaired electrons present in the d-orbitals of Co and Cr is ................ . 1 7. Except He the number of valence shell electron for inert gas element is “..................” . 8 8.
How many unpaired electron(s) is/are present in tripositive chromium ion
. (3)
Cr Þ Cr+3 Þ 4/3
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9.
æ è
1ö
Minimum number of electrons having spin equal to ç - ÷ in Cr is “_____”. 2ø
. 9 10.
Find the total number of orbitals present in ‘M’ shell of an atom.
. 9
4/4
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() ( 27) This section contains questions. : +3 (–1) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is correct.
1.
The CORRECT order of radius is :
(A) Se2– > Br– > Rb+ > Sr2+ –
2–
+
(B) Sr 2+ > Rb+ > Br– > Se2–
2+
2–
–
2+
+
1.
(C) Br > Se > Rb > Sr Ans.(A)
(D) Se > Br > Sr > Rb
2.
A M+2 ion derived from a metal in the first transition metal series has four electrons in 3d subshell. What element may M be ? (A) S
(B) Cr
(C) Mn
(D) None
2.
. ()
3.
Which of the following order of radius is : (A) Li + > Mg+2
(B) Li + < Mg+2
(C)Li>Mg
(D)Li
3.
. ()
4.
Difference of electrons between 'Uub' element and 'Uuo' element is :(A) 2
4. 5.
(B) 4
(C) 6
»
Mg
(D) 8
A n s. ( C ) Element which is present in 4 th period and 13th group of periodic table, can have maximum number of unpaired electron in ground state :(A) 3
5. 6.
(B) 2
(C) 1
(D) 4
Ans. (C) CORRECT order of size of C, N, P and S is :(A)N
(B)C
(C)N
(D)C
6.
Ans. (C)
7.
In which series, number of protons and size both are increasing on moving from first to fourth : (A) O 2–, F –, Na+, Mg2+ (B) O2–, S 2–, Se2–, Te 2– (C) Ti +4, Ti3+, Ti2+, Ti+ (D) I–, Br–, Cl–, F– . ()
7.
8.
Give the correct initial T for true & F for false statement (I) For Mn, the ord er of energy is 3s = 3p = 3d for shel l number 3 (II) 32 elements are prese nt in 5 th period of long form periodic table (III) For Zr+2 ion, µ m =
8 BM
(IV) General valence shell electronic configuration for ƒ-block elements is (n – 2) ƒ 1–14 (n – 1) d10, ns2 (A)TTFT (B)TFFT (C)FFTF (D)FTTF
8. 3/1
Ans. (C) INORGANIC CHEQ M /U .0I#Z 2
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9.
Maximum value of n + l + m for the last unpaired electron in an element present in 17th group and 4 th period in periodic table (A) 4 (B) 5 (C) 6 (D) 7
9.
Ans. (C) n = 4, n+
l
l
= 1 for p subshell m = +1
+m=4+1 +1=6
- () ( 20) This section contains questions. : +4 (0)
Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is (are) correct.
10.
Which of the following statement(s) is/areINCORRECTregarding to Lother Meyer curve (atomic wt v/s atomic volume) (A) Alkali metals are present on asscending position of the cur ve (B) Halogen are present ondescending position of the curve (C) Alkaline earth metals are present at the peak of the curve (D) Alkali metals are present at the peak of the curve.
10.
Ans. (A,B,C)
11.
Which of the following set is/areNOT the triads of Doebereiner’s law of triads of element. (A)(Li,Na,K)
11.
(B)(Cl,Br,I)
(C)(O,S,Se)
(D)(N,P,As)
Ans. (C,D)
12 . In which of the following pairs, the firs t atom is large r than the sec ond ? (A)Br,Cl
(B)Na,Mg
(C)Sr,Ca
(D)N,P
12 . Ans. (A), ( B), ( C) 13 . An element with atomic number 48 (Z = 48) of the periodic table will (A) belong to p-block (C) be called a transition element
(B) be placed in group number 12 (D) have twenty electrons with
1 3. Ans. (B, D) 14 . Which of the following is / are transuranic element : (Atomic number : Cf = 98 , Bk = 97 , Fm = 100 , Gd = 64) (A) Cf
(B) Bk
(C) Fm
(D) Gd
14 . Ans. (A, B, C)
2/2
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() ( 6)
This section contains paragraph. : +3 (0)
Based on each paragraph, there will be questions
Each question has options (A), (B), (C) and (D) of these four option(s) is correct.
Paragraph for q.no. 15 to 16 For a molecule represented by A 2, exists as a solid by virtue of van der waals force s. A
A
X Y
Z
A
T
A
U
Diagrammatic representation in solid state 15 . Choose the CORRECT match fo r element A :(A) Covalent radii is XY radii is YZ
(B) Vander waals' radii is
ZU 2
(C) Covalent
(D) All of these
1 5 . A ns .(D) Sol. Refer diagram 16 . If atomic rad ii of A is x and ionic radii of A + is y, then choose the CORRECT order :(A)x>y
(B)x< y
(C)x=y
(D)None
1 6 . Ans.(A) Sol. Metallic radii > covalent radii > ionic radii () This Section contains 1 . . The codes for the lists. have choices (A), (B), (C) and (D) out of which is correct. 4(0)
17 . List-I(Ions)
List-II[Ionicradius(inÅ)]
(P) Mg2+
(1) 1.37
(Q) K+
(2) 1
(R) Li +
(3) 0.76
(S) Ca2+
(4) 0.72
Code : P
Q
R
S
P
Q
(A)
2
1
3
4
(B)
1
23
R
S 4
(C)
4
3
1
2
(D)
4
13
2
1 7 . Ans. ( D)
2/3
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- This Section contains
1 . Each question has (A, B, C and D) given in
and (P, Q, R, S & T) in . Any given statement in Column I can have correct matching with or statement(s) given in Column II. For example, if for a give n question, statement B matches with the statements given in Q and R, then for the particular question, against 8(0)
statement B, darken the bubbles corresponding to Q and R in the ORS. 1.
Column-I
Column-II
Element
Characters
(A)Cu(Z=29)
(P)Coinagemetal
(B)Am(Z=95)
(Q)d-blockmetal
(C)Zn(Z=30)
(R)Transitionmetal
(D)Th(Z=90)
(S)f-blockelement (T) Transuranium element
1.
Ans. A - P, Q, R ; B - S, T ; C - Q ; D - S
This section contains questions. +4(–1)
The answer to each question is a ranging from 0 to 9, both inclusive
1.
If electron are filled in element not by (n +l) rule but as 1s, 2s, 2p, 3s, 3p, 3d, 4s.... and one period will start as usual while completes on completion ofrespective shell,then predict the period of element havi ng atomic number 59.
1.
Ans.(4)
2.
How many ions among the following have higher value of their ionic radius as compared to H–.
( 12)
F–, NaÅ, Cl–, K Å, Mg2+, O 2– 2.
.(0)
3.
How many of the following order of 3–
(i) P < N
3–
>F
(v) Al > Ga >Be
3.
–
(ii) P > N > F (vi) Nb
;T
SIZE are CORRECT ? (iii) Ar > Ne > He
a
(vii)La>Y>Sc
(iv) Ca > Li > H (viii)O
2–
A n s . (6 )
Sol. (i) P3– > N 3– > F– (ii) O 2– > O – > O+
2/4
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() ( ) This section contains questions. : +3 (–1) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is correct. th th The difference of values of screening constant on 12 and 15 electron of phosphorous element will be :(A)1.05
1. 2.
BACTH - TNP1 & TNP2
) KOTA(RAJASTHAN
(B)0.70
(C)zero
(D)0.35
Ans. (C) Which of the following shell of 'Cl'(Z = 17) will have maximum number of electrons having similar value of azimuthal quantum number (consider ground state configuration and occupied orbits only) :(A) K
(B) L
(C) M
(D) N
2.
Ans. (B)
3.
Maximum number of electrons present in the orbital which have only one nodal plane will be :(A) 6
(B) 10
(C) 2
(D) 1
3.
Ans. (C)
4.
Out of 6p, 5s, 4d, 5f and 5d orbitals, (n + l) value is maximum and minimum for :(A) 6p and 5s respectively
(B) 5f and 5s respectively
(C) 6p and 4d respectively
(D) 5f and 4d respectively
4.
Ans. (B)
5.
If a curve is plotted between first ionisation energy and atomic number of elements then which of the following statement(s) is CORRECT [Atomic num ber is taken on X-axis ] :(A) Peak position of curve will be occupied by He (B) Graph will have positive slope only (C) Graph will have negative slope only (D) All of these
5.
Ans. (A)
6.
Which of the following statement is INCORRECT for an electron which has the quantum numbers n = 5 and m = 3 :(A) The electron may have the quantum number
= 4
l
(B) The electron may have the quantum number s = – (C) The electron may have the quantum number 6.
7.
3/1
2 = 0, 1, 2 ,3, 4 , 5
(D) The electron must be in the directional orbital Ans. (C)
() ( ) This section contains questions. : +4 (0) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is (are) correct. Which of the following have identical value of Z (A) Cs
7.
l
1
(B) Ne
(C) Ca
eff.
on last electron :(D) Rb
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8.
8. 9. 9. 10 . 10. 11 . 11 . 12 .
12 . 13 .
1 3. 14 .
14 .
If s value of 'Na' is 'x' then Z eff. value for 'Al' will be :(A)(11 – x)+(2 × 0.35) (B)13–(x+ 0.70) (C) 13–x (D) 12.30 x– Ans. (B, D) Which of the following pairs of elements, the magnitude of Zeff. remains same :(A)Be,Mg (B)Li,Na (C)K,Na (D)Sr,Mg Ans. (C, D) Select the CORRECT order of first ionisation energy :1 Å +2 (A) Cl < K < Ca (B) Al < Si < Mg (C) Ga < In < Tl (D) Ca < Se < S A n s. ( A , D ) Which of the following sets of orbitals have atleast one comman nodal plane ? (A) 3px , 3dxz (B) 3pz , 3dyz (C) 3dxy , 3dxz (D) 3dyz , 3dz2 Ans. (A, B, C) Which of the following sets of cations have same magnetic moment (spin only) value as well as same magnetic behaviour ? +3 +3 + +2 +3 +2 + +4 (A) Co , Fe (B) Cu , Hg (C) Fe , Mn (D) Au , Ti Ans. (B, C, D) 2 2 1 3 Carbon has the electronic configuration [He] 2s 2p rather than 2s 2p because :(A) Exchange ener gy > excitati on energy (B) Excitation energy > exchange ener gy 2 3 (C) Exchange energy » excitation energy (D) Exchanged pairs of 2p > 2p Ans. (B) Choose the CORRECT order of radius for the following species :1 + –2 +2 1 –3 +4 +2 (A) Na < Be < B (B) Cl < K < S (C) Mg < F < N (D) Pb < Pb < Pb Ans. (C, D )
( )
This section contains questions. +4(–1)
The answer to each question is a ranging from 0 to 9, both inclusive
1. 1. 2.
Total number of elements upto atomic number -'30' which have atleast 6 'd' electrons :Ans. (5) How many of the foll owing are paramagnetic in natu re :+2 +3 +3 +2 + +2 Fe , Mn , Cr , Zn , Na , Ca Ans. (3) How many of the following have smaller atomic size than hydrogen atom :F , Cl , Na , Be , I , As Ans. (0) If first four I.E. value s for an element are 4.2 eV, 9.3 eV, 42.5 eV and 52.4 eV respectively. Then this element will have how many valence electrons :Ans. (2) n If total number of exchange pairs for d configuration are 10 then what is the value of n :Ans. (5) Find the total number of pairs of isoelectronic species (ONF, ONO–) ; (CO2 , NO2Å) , (Mg+2 , N–3) , (N2O , NO 2Å) , (CH4 , NH4Å) , (Mn+2 , Fe+3) Ans. (6)
2. 3. 3. 4. 4. 5. 5. 6. 6.
2/2
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() ( 30) This section contains questions. : +3 (–1) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is correct.
1.
Which of the following shows biggestjump in II and III ionization energy ?
(A) 1s2, 2s2, 2p6, 3s2
(B) 1s2, 2s2
(C) 1s2, 2s2, 2p 3 Ans.(B)
(D) 1s2, 2s2, 2p6, 3s2, 3p2
1. 2.
Which of the following order of ionization energy isCORRECT? (A)In
(B)Sn>Pb
(C)Ga
(D)O>N
2.
Ans.(A)
3.
K forms K + ion but it does not form K +2 because (A) Very low value of (I.E.) 1 and (I.E.)2
(B) Very high value of (I.E.)1 and (I.E.) 2
(C) High value of (I.E.) and low value of (I.E.) (D) Low value of (I.E.)1 and high value of (I.E.) 2 1 2 3.
. ()
4.
Which of the following change requires maximum amount of energy :(A) Mg ® Mg+2
(B) Na ® Na+1
(C) Be ® Be+2
4.
. ()
5.
Which of the following order isCORRECT for given property ? (A) 7s < 4f : energy
(D) Ca ® Ca+2
(B) Sc > Y = La : ionisation energy
(C) Ni < Pd < Pt : ionisation energy
(D) 3d > 3p > 3s : penetration power
5.
Ans. (C)
6.
Choose the CORRECT order of radius for the following species :(A)Nb
(B)N
–3
< Na +
(C) Mg+2 < Al+3
6.
Ans. (D)
7.
From the given information regarding element M M(g) ® M+3(g) + 3e–
DH
(D) F– < O–2
= X kJ/mole
IE1(M) = Y kJ/mole IE1(M+2) = Z kJ/mole The value of IE2(M) will be :-
7.
3/1
(A) (X + Y + Z)kJ/mole
(B) (X – Y + Z) kJ/mole
(C) [Z – (X + Y)]kJ/mole
(D) (X – Y – Z)kJ/mole
Ans. (D)
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8.
The ionization energies (KJ/mol) of a representative element is given as IE 1, IE 2, IE3, IE 4, IE5, IE 6 is 1402, 2857, 4578, 7475, 9445, 52265, 64358 respectively. The representative element is :(A)Pnictogen
(B)Chalcogen
(C)Halogen
8.
. ()
9.
The CORRECT ioniation energy order of III (A) B > Tl > G a > A (C) B > G a > A
9. 10 .
l
l
> ln
> ln > T
rd
(D)Alkalimetal
group elem ents is :-
(B) B > Tl > Al > Ga > ln (D) B > G a > A
l
l
> Tl > ln
Ans. (A) The radius of isoelectronic species :(A) Increases with increase in nuclear charge (B) Decreases with increase in nuclear charge (C) Same for all
1 0.
11 .
(D) First increases then decreases
An s. (B)
- () ( 32) This section contains questions. : +4 (0) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is (are) correct. Which of the following statement is/are CORRECT ? (A) Successive IE's are gradually decreasing –
(B) Energy is released when e is remov ed from a half-filled shell or completely filled shell (C) IE 1 of A l < IE o1
Mg f
(D) IE
1
of B < IE
1
of Be
11.
Ans. (C , D)
12 .
Select the CORRECT ionisation energy order for the given species :(A) Sn > Pb : first ionisation energy
(B) Li > Ne : second ionisation energy
(C) O > F : second ionisation energy
(D) Si > Mg : first ionisation energy
12 .
Ans. (B, C, D)
13.
Which of the following ionization order is/are correct :(A) Zn > Cd > Hg
(B) Cu > Ag > Au
(C) Sc > Y > La
13.
. (, )
14.
Consider the following ionization steps : + A (g ) + A (g )
® ®
(D) F > Cl > Br
2+ – A (g ) + e ; DH = 200 eV;
A 3(g+) + 2e–; DH = 750 eV;
Which among the following options is/are : (A) IE 1 of A(g)i
s200eV/atom
+ (C) IE 1 of A (g )i s200eV/atom
14. 2/2
(B)IE
3
+ of A (g ) is 550 eV/atom
(D)IE
3
of A(g) is 550 eV/atom
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This section contains paragraph. : +3 (0)
Based on each paragraph, there will be questions
Each question has options (A), (B), (C) and (D) of these four option(s) is correct.
The energy required to remove the most loosely bound electron from an isolated gaseous atom is called the ionization energy. Ionization energies are determined from spectra and –1
are measured in kJ mol . 15 .
Which of the following order is INCORRECT :(A) Be < B (IE 2)
(B) Sr < Sc (IE
1
)
(C) Na > Mg (IE
2
)
(D) Al > Ga (IE 1 )
15.
.()
16.
Which of the following has highest ionization energy among the given options. (A) Ne
16.
(B) Xe
(C) Ar
(D) Kr
. () -
This Section contains
1 . Each question has (A, B, C and D) given in
and (P, Q, R, S & T) in . Any given statement in Column I can have
correct matching with or statement(s) given in C olumn II. For example, if for a given question, statement B matches with the statements given Q in and R, then forthe particular question, against statement B, darken the bubbles corresponding toQ and R in the ORS. 1.
Coulmn-I(Order)
8(0)
Column-II(Properties)
(A)K
(P)Atomicradius
(B)Ca>Mg>Be
(Q)Firstionisationenergy
(C)B=Al
(R)Metalliccharacter
(D)C>Si>Ge
(S)Numberofelectronsinpenultimateshell (T) Second ionisation energy
1.
Ans. A - Q, B - P, Q, R C - S, D - Q , T ( 8)
This section contains questions. +4(–1)
The answer to each question is a ranging from 0 to 9, both inclusive
1.
Among the following, total number of set of isoelectronic species have correct order of ionisation energy is (i) Be > B+
(ii) N < O+
(iii) Na+ > Ne (iv) H < He +
(v) F– < Cl–
1.
Ans. (1)
2.
Which of the following having second ionisation energy greater than the second ionization energy of Li. Na, Mg, Al, Ne, Be, B
2. 2/3
An s. ( 0) INORGANIC CHEQM /U4 .# IZ
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() ( 18) This section contains questions. : +3 (–1) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is correct.
1.
Which of the foll owing element having electronffinity a greater h t an ‘S’.
(A) O 1. 2.
(B) Se
(C) Te
(D) Cl
Ans.(D) In which case electron affinity (EA) order of the elements or ions shown is INCORRECT :–
(A) Cl > Cl
–
(B)B>Cl
(C)S>O
(D)Se>O
2.
Ans. (A)
3.
Which of the following element has positive value of DHeg(1) (A)Fluorine
(B)Nitrogen
(C)Phosphorous
(D)Oxygen
3.
. ()
4.
The INCORRECT representation of relationship between ionisation energy (I.E.) and electron affinity or electron gain enthalpy EGE of element X in its various ionic forms is :+
(A) IE1(X) = |EA1(X )|
n
(B) IE
n +1
(X ) = |E.A1(X
1
)|
(n = any natural number) +2
(C) IE2(X) = |EGE2 (X )|
+
(D) IE
(X) = |EGE1(X )|
1
4.
A n s. ( C )
5.
Which of the following order correct is for their indicated properties ? (A) C+ < B ; Ionisationenthalpy
(B) Si>P ; Electron affinity
(C) Y3+ > Zr4+ ; Magnetic moment (spin only)
(D) O 2– < F– ; Shielding constant (s)
5.
Ans.(B)
6.
Which of the following order of atomic radii isCORRECT :(A)Li>Na
6.
7.
(B)Ga>Al
–3
(C)P
> S
–2
(D) H > H
An s . (C )
- () ( 20) This section contains questions. : +4 (0) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is (are) correct.
Which of the following process is/areendothermic. (A) N ® N– (C) O
®
O
(B) P
–
® P–
(D) Cl– ® Cl2–
7.
Ans. (A, D)
8.
Select the CORRECT electron affinity order for the given species :(A)B>N
8. 3/1
–
(B)C
+ >
C
(C)F>Br
(D)C>Si
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9.
Which of the following have more EA value compared to oxygen atom in gaseous state ? (A) Sulphur atom
(B) Selenium atom
9.
An s.(A, B, C, D)
10 .
In which of the following pair(s) EA of 2 (A)(N, O)
(B)(Be
(C) Tellurium atom (D) Chlorine atom
nd
2+
,B)
element is/are more than EA of 1 (C)(P
–3
2+
, Ca )
1 0.
Ans.( A, C)
11 .
Which of the following statements areCORRECT ?
(D)(F
+
st
element.
+
, Cl )
(A) If difference in the successive ionisation energy is greater than 16 ev/atom, than lower oxidation state will exist (B) Successive I.E. for an atom is always increases (C) I.E. is inversely proportional to screening effect (D) During the formation of cationDH is always +ve. 11 .
Ans. (A, B, C, D)
() ( 12)
This section contains paragraphs. : +3 (0)
Based on each paragraph, there will be questions
Each question has options (A), (B), (C) and (D) of these four option(s) is correct.
Electron affinity of an atom is defined as the amount of energy released when an electron is added to a neutral atom. 12.
Which of the following orderfofirst electron affinity isCORRECT. (B) F + > Cl+
(A) F > Cl 12.
. ()
13.
The exothermic process is : (A) Be– + e– ® Be2–
13.
(C)O>Po
(B) N + e– ® N–
(D)N>B
(C) O + e– ® O–
(D) Ne + e – ® Ne–
. ()
A section of periodic table is shown below : 1
18 2
II period III period
13
14
15
16
P R
17 Q S
Out of P, Q, R and S which is 14.
The element having least IE is (A) P
(B) Q
14.
. ()
15.
Element having highest EA is (A) P
15. 2/2
(B) Q
(C) R
(D) S
(C) R
(D) S
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-
This Section contains 2 . Each question has (A, B, C and D) given in and (P, Q, R, S & T) in . Any given statement in Column I can have
correct matching with or statement(s) given in C olumn II. For example, if for a given question, statement B matches with the statements given Q in and R, then for the particularquestion, against statement B, darken the bubbles corresponding toQ and R in the ORS. 1.
Coulmn-I
8(0)
Column-II
(Electronicconfigurationof
(Characteristics)
element in ground state)
(A) 1s2
(P) Highest ionisation energy
(B) [Ne] 3s23p5 2
(Q) Highest electron gain enthalpy
5
(C) [Kr] 5s 5p
(R) Smallest anionic radius of element (uninegative)
(D) [He] 2s22p5
(S) Largest anionic radius of element (uninegative) (T) Gas
1.
Ans. A - P , T ; B - Q , T ; C - S ; D - R , T
2.
Match the column :Column I (Process) (A) N+ ®N (B) O–
®
O–2
Column - II (Properties) (P)Energyisabsorbed (Q) Inert gas configuration is achieved
(C) Mn ® Mn+4
(R) Half filled configuration is achieved
(D) P ® P –3
(S) Magnetic nature changed (T) Energy released
2.
Ans. (A) - R, T ; (B) - P, Q, S ; (C) - P ; (D) - P, Q, S
This section contains questions. +4(–1)
The answer to each question is a ranging from 0 to 9, both inclusive
1.
Find the number of elements which have less value of first electron affinity as compared to P atom.
( 8)
N , C , O , S , Si 1.
A n s . (1 )
2.
Find the number of elements for which first elect ron affinity has positive values. P , N , Ne , O , Be
2.
2/3
Ans.(2)
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() ( ) This section contains questions. : +3 (–1) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is correct.
1.
Transuranic element is :-
(A) Th
(B) La
(C) Po
(D) Np
1.
A n s . (D )
2.
Which of the following element of second period has second highest radius :(A) Ne
(B) Li
(C) F
(D) O
2.
A ns . (B )
3.
Which of the following order is INCORRECT :(A) Al > Ga +
(C) N > O 3. 4.
4. 5.
+
R
® ®
6.
7. 7. 8.
I onization energy
(D) O > Se
® ®
Electron gain enthalpy Electron negativity
A ns . (C ) Which of the following statement is CORRECT : (A) d-subshell contains 2 nodal plane (B) P-shell contains maximum number of electrons '6' (C) Five different subshells are present in 'N' shell (D) Total number of electrons having spin quantum number = –1/2 will be 16 in 'N' shell An s. (D) Pair of orbital which have atleast one comm on noda l plane(s ) : (A) p x and p
5. 6.
(B) F + > Cl+
adius
y
(B) d xz and d
yz
(C) d x 2 – y2 and d xy
(D) d zy and d z2
A ns . ( B) Find the number of exchanges possible in 3d 5 subshell. (A) 6 (B) 8 (C) 10 (D) 12 A ns . ( C) - () ( 0)
This section contains questions. : +4 (0) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is (are) correct. Which of the following is/are Metalloids :(A) N (B) Si (C) As An s. ( B, C ) Which of the following order of radius is/are 2–
–
3–
2–
(D) Tl CORRECT :–3
–
–
2–
9.
(A) (B) P < Se (C) N > I (D) Cl A nsS. ( A,B A n s . ( B , C , D)
10 .
Which of the following order of energy level of orbitals are correct for single electronic
10 .
system :(A)2s=2p A ns . ( A , B , C )
8. 9.
3/1
(B)4s>3d
(C)3p<4s
> O
(D)4d>5s
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11 .
1 1.
Which of the following match is CORRECT : (A) H + ®S mallestcation (B)He (C) F ® M aximum electron affinity (D) Cl A ns . ( A , B)
This section contains paragraphs. +3(0)
Based on each paragraph, there will be questions
Each question has options (A), (B), (C) and (D) of these four option(s) is correct. Inert gases are good reference points to locate the position of an element in periodic
® ®
Maximum ionization energy Maximum electronegativity
() ( )
table. Consider an element 'X' of p-block having total five valence electrons and placed in the same period in which transition elements of 3d series are present. Answer the following question : 12 .
Element 'X' belongs to following period and group respectively : (A)3,15
(B)4,15
(C)4,
1 2.
A ns . ( B)
13 .
Element just below to this element 'X' is : (A) I (Iodine)
(B) Sb (Antimony)
17
(D) 5, 15
(C) Ge (Germenium)(D) As (Arsenic)
1 3.
A ns . ( B)
( ) Marking scheme : For each entry in - +2 If only the bubble(s) corresponding to all the correct matche(es) is (are) darkened 0 In none of the bubbles is darkened –1 In all other cases
1.
Match the following Colu mIn -
Col u mIn -I
(A) Number of subshell in a shell
(P) 2 (2
(B) Number of orbital in a shell
(Q) n
(C) Num ber of e –i
nashell
(D) Num ber of e –i nasubshell
+ 1)
2
(R)2n (S)n
l
2
(T) (4 l + 2) 1. 2.
An s. ( A) - Q ; (B ) - S ; (C) - R ; ( D) - P,T C o l u mn I C ol u m n II
2.
Atom ic numb er of elemen t (A) 24 (B) 61 (C) 16 (D) 38 A n s. ( A) - R ; ( B ) - S ; ( C ) - Q ; ( D) P
2/2
Correc t posi tion (P) s-block (Q) p-block (R) d-block (S) f-block
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( )
This section contains questions. +4(–1)
The answer to each question is a ranging from 0 to 9, both inclusive
1.
Find the number of elements (excluding s-block and p-block elements) in 8 periodic table, where each orbital is having maximum number of 3 electrons Fill your answer as sum of digits till you get the single digit answer. Ans . 6 3 OMR a n s ( 9) Total number of elements are present in s-block of modern periodic table
1. 2.
th
period of
4.
Fill your answer as sum of digits till you get the single digit answer. Ans . 1 4 OMR a n s ( 5) Find the number of processes are exothermic in nature. (1) N ® N– (2) O – ® O2– (3) P ®P– (4) N –®N (5) S ® S– A n s. ( 3) Find the maximum number of electrons in Cr , if l + m Þ 2
4.
A n s . (5 )
5.
Find the number of element which are present in liquid state at near room temperature
2. 3.
3.
Ag , Pt
, Ba , Ga , Hg , Br , I , S , Cs
5.
A n s . (4 )
6.
Find the number of elements which have low ionization energy as compare to ionization energy of He :Na , F , Ne , Li , Be , Al , C , Xe
6.
A n s . (8 )
7.
Find the number of elements which have first electron gain enthalpy is positive :Li , Mg , Be , N , P , B , Si
7.
2/3
A n s . (3 )
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() : ( : 12)
This section contains 4 questions. : +3 (–1) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is correct.
1.
In which pair E.N. of both is almost same :-
(A) OCl ,
S(B) ,C
1.
(C) Br ,P An s. (B)
(D) Mg Li ,
2.
If D = BE A–B –B
E A–A ´ BE B–B
select which bond has maximum value of "D" (given that electronegativity order is : X > Y > Z) (A)X–Y
(B)X–Z
(C)Y–Z
(D)Allhavesame
2.
A n s. ( B )
3.
Predict the electronegativity in mulliken scale of element having ionization energy 13.6 eV/atom and electron affi nity is 1.46 eV/atom :(A)8.53
(B)7.53
(C)7.6
(D)Noneofthese
3.
An s. (B)
4.
Which of the following isCORRECT for Na(Z = 11) :(A) It's electro negati vity on Pauli ng's scale = 2.1 (B) Number of vacant orbitals in its valence shell is 8 (C) It is a 2 nd period element
8B.M
(D) It's magnetic moment (spin only) = 4.
Ans. (B)
- () : ( : 8)
This section contains 2 questions. : +4 (0) Each question has FOUR options (A), (B), (C) and (D). of these four option(s) is (are) correct.
5.
Identify the only CORRECT statement :-
(A) The electron gain enthalpy (DHeg) for an isolated gaseous anion is always positive (B) Pauling's scale of electronegativity is a relative scale (C) The number of electrons havingl = 2 in La(Z = 57) is equal to 21 (D) IE2 (Mg) > IE 2 (A l) 5.
Ans. (A, B, C)
6.
Select the correct order of EN of species :+7
(A) Mn (C)Li>Na 6. 3/1
+5
> Mn
+4
> Mn
(B) N > O > F (D)F>Cl>Br>I
A n s. ( A , C , D ) INORGANIC CHEQ M /U .0I#Z 7
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() : ( : 18)
This section contains paragraphs. : +3 (0) Based on each paragraph, there will be questions Each question has options (A), (B), (C) and (D) of these four option(s) is (are) correct.
Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. For measurement of electronegativity, different types of scales were proposed. One such scale is Pauling scale which on the basis of hydrogen predicted the values of electronegativity of different elements. After that some other scales like Mulliken and Allred-Roschow scales were also proposed on the basis of ionization energy, electron affinity and size of various elements. 7.
Which of the following relation is . (A) Pauling Scale : XA – XB = 0.208 D A– B (D in k.cal/mole) IP + EA (IP & EA are expressed in eV) 2 0.359Z eff (C) Allred rochow XAR = (r in Å) r2 (D) All of these
(B) Mulliken's Scale : XM =
7.
. ()
8.
If the maximum value of "n" is defined as 2 then the expected electronegativity of X value on pauling scale, where the valence shell electronic configuration of X is ns2 np5 :(A) 4
(B) 3.5
(C) 3
(D) 2.5
8.
. ()
9.
Largest difference in electronegativity is observed in :(A)Li,Cl
9.
(B)NaCl ,
(C)BrF,
(D)LiF,
. ()
Paragraph Electronegativity is the property of a bonded atom. The relative tendency of an atom to attract the shared electron pair towards itself is called electronegativity. electron affinity electronegativity both measure the power of attracting electrons but electron affinity is concerned with an isolated gaseous atom while electronegativity is concerned with the atom in combination. 10 .
Select the CORRECT order of electronegativity ? (A) sp < sp2 < sp3
1 0. 2/2
(B) Fe+2 < Fe+3
(C) –CF3 > –CH 3
(D) Se > S
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11 .
Which of the following relation isCORRECT according to Mulliken's Scale ? I.P. + E.A.
(A) XM =
3
(B) XP =
I.P. + E.A.
(C) XP =
2
I.P. + E.A.
5.6
(D) XP =
2.8 XM
1 1.
Ans. (C)
12 .
Which of the following property has no significance in elemental form of bromine :(A) Bond length
1 2.
(B) Molecular mass
(C) Electronegativity (D) Vanderwaal's force
Ans. (C)
()
This Section contains 2 . . The codes for 4(0) the lists. have choices (A), (B), (C) and (D) out of which is correct. 13 .
Match List - I with List - II and select CORRECT code for your answer :L I i-st
L IIi-st
( Properties)
(Decreasingorder)
(P) Ionisation energy
+
(1)Ne>Na
(Q) Radii
O> (2) S
(R) Electronegativity
(3)Hf>Zr
(S) Electron gain enthalpy (Magnitude only)
(4) [He]2s
2
4
2
3
2p > [He]2s 2p
Code : (A)
PQRS 1 2
3
4
(B)
1
3
4
2
(C)
4
2
1
3
(D)
3
1
4
2
13.
A ns .(D)
14 .
Match the following list Lis(tI)
Lis(tII)
(Elements)
(Chracteristics)
(P)He
(1)Highestionizationenergy
(Q)F
(2)Highestelectronegativity
(R)Cl
(3)Highestelectrongainenthalpy
(S) Li :
(P) 1 3
(Q) 3 1
(R) 2 2
(S) 4 4
(4) Soft metal
(A) (B) (C) 1 2 3 4 (D) 4 3 2 1 14. 2/3
. () INORGANIC CHEQM /U6 .# IZ
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1.
3 : ( : 16) questions.
This section contains Marking scheme : For each entry in - +2 If only the bubble(s) corresponding to all the correct match(es) is (are) darkened 0 In none of the bubbles is darkened –1 In all other cases -
- (Correct for)
()
(A)Na=K (B)FO (D)Be>B
(P)AtomicRadius (Q)Ionizationenergy (R)Effectivenuclearchargeonoutershellelectron (S)Electronegativity (T) Electron affinity
1.
. (
); (
, , ), (
2.
Match the column - I with column - II and select CORRECT code for your answer :ColumIn -
(P)DecreasingorderofIE
(B)Mg,Ca,Sr
(Q) Increasing order of Radius
(C)Li,Be,B +
2.
, )
ColumIn -I
(A)Li,Na,K
(D) Na , Mg
, ); (
(R)IncreasingorderofEA +2
, Al
+3
(S) Increasing number of valence shell electrons
(T) Increasing Z/e ratio Ans. (A)- P, Q ; (B) - P , Q ; (C) - S ; (D) - R, T
: ( : 20)
This section contains questions. : +4(–1) The answer to each question is a ranging from 0 to 9, both inclusive
1.
The number of elements among the following which have lower electronegativity than 'S'
N , Na , P , O , F , B , Se 1.
Ans. (4)
2.
What is the closest integer of diffrence of EN. of boron and florine :-
2.
Ans. (2)
3.
Find the number of hydra acid which is/are more acidic as compared to H
O
2
H2S , H2Se , HF , HBr , HCl , HI 3. 4.
Ans. (6) Find the number of elements which is/are having more metallic charecter as compared to Mg. Be, Na , Al , K , Ca , Cs , Sr
4.
Ans. (5)
5.
Which carbon is most electronegative in given compound 1
HC
2
3
4
5
C– CH2 –C=CH–CH3 H
5. 2/4
Ans. (1) INORGANIC CHEQM /U6 .# IZ
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) KOTA(RAJASTHAN
() This section contains . Each question has four choices (A), (B), (C) and (D) out of which is correct. (1) 1.
Select the CORRECT order :+
+
(A) EA(Na ) < EA(K )
(B)EA(Se)
(C) IE (S) > IE (Cl)
(D)Sizeof
2
Al +3
1.
A n s. ( C )
2.
Identify the INCORRECT order of lattice energy. (A) NaF > NaCl
(B) NaCl < MgCl
2
(C) ScN > TiC
2.
An s. (C)
3.
Which of the following oxide is most acidic :(A)MO
< size of Mg+2
(aq.)
2
(B)M
2
O
(C) M
2
(aq.)
(D) MgO > MgF
O3
2
(D) M 2O 5
3.
An s. (D)
4.
Which of the following is the effect of f-orbital contraction or lanthanide contraction ? (A) Si milarity in t he si ze of Nb an d Ta
(B) High IE of Zn as compared to Ga
(C) Lo w IE of Hg as c ompared to Cd
(D) Hi gh IE of G a as co mpared to ' A
4.
Ans. (A)
5.
Which combination represents amphoteric oxides only :(A)CO,SnO
(B)Al
O3, PbO2
2
(C) CO, ZnO
(D)SnO
5.
A n s. ( B )
6.
The INCORRECT order with respect to mentioned property : (A) Ti < Zr ~ H f( Atomicsize) (C)F>O>N(E.N)
(B)B>A
l
l'
, NO
2
> Ga (IP1)
(D) CaO > SrO > BaO (Lattice energy)
6.
A n s. ( B )
7.
CORRE CT periodic trend according to the mentioned property is :(A) HF > HCI > HBr > HI (Acidic character) (B) NO < NO2 < N2O5 (Basic nature) (C) NaF < MgF2 < A1F3 ( Lattice energy)
7. 8.
(D) Li 2O > Na 2O > K2O (Basic character)
A n s. ( C ) Elements
Electronegativity
A B C D
0.9 2.1 1.2 1.8
Hydroxide of element which reacts easily with an acid is (EN of oxygen = 3.5) :(A)DOH 8.
1/1
(B)BOH
(C)COH
(D)AOH
An s. (D)
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9.
Select the CORRECT order of basic strength :(A) CrO3 < Cr2O <3
CrO
(B) Cs
(C) SnO < SnO 2 9.
O < CaO < ZnO
2
(D) MnO < MnO2 < Mn2O7
Ans. (A)
()
This section contains . Each question has four choices (A), (B), (C) and (D) out of which are correct. (1) 10 .
Which of the following statements is/are CORRECT ? (A) Li is the strongest reducing agent in aqueous state (B) Process is endothermic when O –(g)is converted to O–2(g) (C) The smallest anion of the periodic table is F
1
(D) Electron affnity of Se is more than 'O'. 10 .
Ans. (A, B, C, D)
11.
Which of the following order of acidic stgrength is/are :(A) HF > HC>l
HBr>HI
(B)HOC
(C) N2O5 > N2O3
l
< HOBr < HOI
(D) C l2O7 > C l2O5
11.
. (, )
12 .
Select the CORRECT options, against the mentioned properties :(A) Sc 3+ > Sc2+ > Sc+ (I onization energy)
(B) BeF 2 > MgF2 > CaF2 > SrF2 (Lattice energy)
(C) Li+(aq.) < Mg 2+(aq.) < Be 2+(aq.) (Ionic mobility) (D) M+(g) < M(g) < M
2+
(g) (Electron gain enthalpy)
12 .
Ans. ( A, B)
13.
Identify the CORRECT order of lattice energy. (A) BaF2 > CsF
(B) Na 3N > NaN3
(C) ScN > TiC
13.
An s . ( A , B , D )
14.
The CORRECT order of lattice energy is/are :(A) BeO > BeF 2
(B) AlF3 < NaF
(C) NaF > KF
(D) BeO > CaO
(D) MgF
2
< Ca F 2
14 .
Ans.( A, C)
15.
From the given data reagarding enthalpy changes in joule, find CORRECT statement(s) :Ca(s)
¾¾®
10
Ca(g)
¾¾ ®
5
Ca+(g)
1 – ® Cl(g) ¾¾¾ Cl (g) ¾¾¾ ® Cl (g) 20 –40 2 2
¾®
15
Ca+2(g)
H2O ¾¾ ® –5
H2O ¾¾¾® –20
Ca+2(aq.)
Cl–(aq.)
(A) Lattice energy of CaCl2 = –90 J/mole (B) |Hydration energy of Ca+2(aq.)| > |Hydration energy of Cl–(aq.)| (C) Bond dissociation energy of Cl2 = 40 J (D) IE1 (Ca) + EGE1 (Cl) = –35 J 15 . 2/2
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()
This section contains2 each describing theory, experiment, data etc. relate to two paragraphs with two questions on each paragraph. Each question of a paragraph has among the four choices (A), (B), (C) and (D). (0) Paragraph Generally hydrated size of cation has higher size than the corresponding cation 16 .
Which of the following cation has highest hydration enthalpy among the following :+ (A) Li(aq.)
+2 (B) Be(aq.)
+ (C) Na(aq.)
+ (D) Rb(aq.)
1 6.
An s. (B)
17 .
Which of the following cation has lowest hydrated radius among them :+2 (A) Ba(aq.)
1 7.
+ (B) Cs(aq.)
+2 (C) Sr(aq.)
+ (D) Rb(aq.)
An s. (B)
Paragraph
It is the energy released when 1 mol of gaseous ions are hydrated in water. It is directly proportional to nuclear charge and inversely proportional to size. It always decreases down the group. 18 .
Which of the following is incorrect order of hydration energy :– – (A) F(aq.) > Cl (aq.)
+ + (B) Li(aq.) > Na(aq.)
+3 +2 (C) Al (aq.) > Mg (aq.)
18.
A ns .(D)
19 .
Which of the following having highest ionic mobility :+ (A) Li(aq.)
19 .
+ (B) Cs(aq.)
+ (C) Na(aq.)
(D) None of these
+2
(D) Ba
An s . (B )
- ( )
This section contains 2 . The answer to each question is , ranging from 0 (both inclusive) 1.
(1)
Find out the total number of elements, which are betterreducing agent than ‘K’ in aqueous solution. Li , Na , Be+2, Rb , Cs
1. 2.
Ans.(3) Find the number of ions having higher hydration energy compared to that of Be2+
Li+, Na+, Rb+, K+, F–, Ba+2, Mg+2 2.
2/3
.(0)
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() This section contains 10 . Each question has four choices (A), (B), (C) and (D) out of which is correct. 3(1) 1.
Which of the following follow octet rule. (A) XeF 2
(B) PCl5
1.
.()
2.
NCl5 does not form because.
(D) AlF3
(C) BeF 2
(A) Nitrogen does not show +5 oxidation sate (B) Nitrogen shows maximum of 4 covalency (C) Nitr ogen show maximum of 5 covalency (D) Chlorine does not show variable covalency 2.
A n s. ( B )
3.
Which of the following compound is not hypovalent. (A) AlF3
(B) AlCl3
(C) AlBr3
(D) AlI3
3.
. ()
4.
The oxidation states of carbon in carbon sub oxide O=C=C=C=O are :(A)+2,–2
(B)0,+2
(C)–1,+2
(D)Only+2
4.
A n s. ( B )
5.
Which of the following element does not show variable oxidation state. (A) Cl
(B) F
(C) Br
(D) I
5.
An s. (B)
6.
Sum of formal charges in oxygen atoms present in ozone is :(A) –2
(B) +l
(C) –l
(D) zero
6.
A n s. (D)
.
Which of the following specie does not act as lewis acid. (A) BF3
(B) SiF4
(C) NH4+
.
. ()
.
Which of the following specie has 'p' co-ordinate bond. (A) O 3
(B) SiF62–
(C)CO
.
. ()
.
Specie in which underlined atom follows octet rule :(A) BI3
(B) BeF3–
(C) ClF3
(D) PCl5
(D)NO
– 3
(D) CO
.
. ()
10.
In which of the following specie underlined atom has maximum oxidation state :(A) SF 6
10.
1/1
(B) XeF6
(C) XeO64–
(D) IO 6–5
. ()
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() This section contains . Each question has four choices (A), (B), (C) and (D) out of which are correct. 4(1) 11 .
Lewis theory fails to explain which of the following structure(s) ? (A) SF6
(B) XeF 2
(C) XeF 4
(D) BeCl 2
11 .
Ans. (A, B , C , D )
12 .
Which of the following is/are INCORRECT representation of lewis structure. O
N
(A)
N
+2
O
(B) O
(C) H–C N
O
–1
+1
–1
N==N==N
(D)
º
O
1 2.
Ans.( A, B)
13.
According to lewis-dot structure which of the following statement is/are about SO3 molecule. (A) 2 coordinate bonds are present
(B) SO
(C) Lone-pair and bond pair ratio is 2
(D) Number of
3
is hypervalent molecule -bond are 3
s
13.
. (, , )
14 .
Which of the following molecules are lewis acid :-
14 .
(A) AlCl 3 Ans. (A, B, C, D)
15 .
Which of the following species can form co-ordinate bonds with two –Fions.
l
(A) BeF2 1 5.
(B) CO 2
(C) PC
(B) BF3
(D) AsF5
5
(C) CF4
(D) SiF4
A n s. ( A , D )
()
This section contains1 each describing theory, experiment, data etc. relate to two paragraphs with two questions on each paragraph. Each question of a paragraph has among the four choices (A), (B), (C) and (D). 3(0)
Lewis dot structure is the arrangement of various atoms in a molecule & types of bonding present in it but doesn't give the idea of geometry of the molecule. 1.
Which of the following is lewis structure (A)
.. + .. N=N=N .. ..
(B)
.. : N–N ºN : ..
2–
+
(C)
1.
. ()
2.
What is the formal charge on O atoms in ozone. (A)0,+1,–1
2.
2/2
(B)0,–2,+2
(C)0,0,0
.. : : Nº+N–N ..
2–
(D)
–1
+
–1
: N=N=N :
(D)Noneofthese
. ()
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This section contains 4 . The answer to each question is a , ranging from 000 . 1.
(+4/0)
(i) What is the oxidationof potassium ion in KO2 = x (ii) Find the magnitude formal charge on the carbon atom in CO = y (iii) Find formal charge as O in CO = z For example if x is = 9, y = 8 and z = 6 then your answer is 986 for OMR
1.
Ans. (111)
2.
(i) Find the number of species which can act as lewis acid = p SiF4 , H2O , PCl5 , NH3 , BF3 (ii) Find number of species which have lone pair oncentral atom = q (iii) Find number of species in which un derline atom have itshighest oxidation number = r
For example if p is = 9, q = 8 and r = 6 then your answer is 986 for OMR 2.
Ans. (323)
3.
XeFn have two lone pair on Xe find the total number of lone pair in molecule
3.
Ans. (014)
4.
Consider C N cyngonen for given : 2
2
x = Number of 2p –2p bonds p
p
y = Number of lone pair inmolecule z = Bond order of C–Cbond in most stable structer
For example if x is = 9, y = 8 and z = 6 then your answer is 986 for OMR 4.
2/3
Ans. (421)
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: () This section contains 10 . Each question has four choices (A), (B), (C) and (D) out of which is correct. 3(1) 1.
Most effective
p-bond
(A) 2p p–3dp
among the following is :-
(B) 2pp–3pp
(C) 3dp–3dp
(D) 3p p–3pp
1.
Ans. (A)
2.
Which of the following overlapping results in no bond formation if x-axis is the internuclear axis :(A) dxy + dxy
(B) dxy + py
(C) py + px
(D)
x-axis sp
2
sp
2
2.
An s.(C)
3.
If the internuclear axis is 'y' then which of the following match is . (A) d xz + dxz ® d
3. 4.
(C) p x + px ® s
(D) s + pz ® s
. () Select in which of the following number of s-bonds
p-bonds
are higher as compared to number of
:-
(A) C 2N2 4. 5.
(B) px + p y ® p
(B) C 3O2
(C) C 2H2
(D) S 8
Ans. (A) Which of the following order isCORRECT against mentioned property :(A) F 2 < Cl 2 < Br 2 < I2 (Bond length)
(B) F 2 > Cl 2 > Br 2 > I2 (Bond energy)
(C) 2p–2p > 2s–2s > 2s–2p (s-bond strength) (D) 3p–3p > 3p–3d > 3d–3d ( p-bond strength) 5.
Ans. (A)
6.
'dxy' orbital can not form bond with which of the following orbital (If overlapping axis is either 'x' or 'y' or 'z') (A) px
(B) py
(C) pz
(D) dxy
6.
Ans. (C)
7.
Difference in the number of overlapped lobes in a single orbital in the formation of bond respectively are equal to :(A) 1
7. 8.
(B) 2
(C) 3
(D) 0
An s . (C ) In which of the following general overlapping principle isWRONG ? (Where a, b and c can be any one of x, y ,z axis respectively) Typeob f ond
8. 1/1
Principle
(A)
s
pa + pa , internuclear axis ® a
(B)
p
pa + pa , internuclear axis ® b
(C)
d
dab + dab , internuclear axis ® c
(D)
d
dab + dab , internuclear axis ® b
Ans. (D) INORGANIC CHEQ M /U .1I#Z 0
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d
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9.
Which of the following bond strength order is NOT due to the concept of overlapping orbital strength theory ? (A) –C–C– > –Si–Si–
(B) H–F > H–Cl
(C)O=O>S=S
(D)F–F
9.
An s. (D)
10 .
Which of the following general bond strength order is WRONG ? (A) ns – ns < ns – np < np – np (B) (n – 1)s – (n – 1)s > ns – ns > (n + 1)s – (n + 1)s (C) npp–npp > (n + 1)pp – (n + 1)p p > (n + 2)pp – (n + 2)pp (D) npp–npp > npp–ndp < ndp – ndp
10.
. () () This section contains 7 . Each question has four choices (A), (B), (C) and (D) out of which are correct. 4(1)
11 .
Which of the following overlapping is not possible if z is internuclear axis :(A) (s + px)
(B) p
z
+ dyz
(C) s + d x 2 – y 2
(D) px + p z
11 .
Ans. (A, B , C , D )
12 .
Which of the following combination of orbitals can formd-bond. if z is internuclear axis :(A) (dxy and d xy)
(B) (dxy and p x)
(C) d x 2 – y 2 and d x 2 – y 2
12 .
Ans. ( A , B, C )
13 .
Find the CORRECT bond's strength order in the following :-
(D) dxy and d yz
(A) O to O > S to S (
p–bond)
(B) F to F > Cl to Cl (s–bond)
(C) N to N > P to P (
p –bond)
(D) C to C > Si to Si (s–bond)
13.
A n s. ( A , C , D )
14 .
Which of the following orbital(s) can form (A) p x–p x
(B) dyz – dyz
p-bond
if z-axis is the approaching axis :-
(C) dxz – dxz
(D) d xz – pz
14 .
An s . ( A , B , C )
15 .
Which of the following order(s) is/areCORRECT regarding bond strength :(A) F2
Cl 2
Br 2
I2
(B) –C–C – ..
(C) –C –C–
–Si– Si–
15 .
Ans. (B, C, D)
16 .
Select the CORRECT order :-
16 . 2/2
C=C ..
..
(D) –N–N–
–C C– º
..
–P–P–
(A) F–F > –O–O– > –N–N–
(B) 2pp – 2p p > 2p p – 3p p < 2p p – 3p p
(C) 3pp – 3p p < 3dp – 3dp
(D) 3ps – 3ps > 3p p – 3p p
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17 .
Which of the following do not formp-bond ? (A) s-orbital
17.
(B) p x-orbital
(C) p y-orbital
(D) d z2 -orbital
( A , D)
() This section contains 1 each describing theory, experiment, data etc. relate to two paragraphs with two questions on each paragraph. Each question of a paragraph has among the four choices (A), (B), (C) and (D). 3(0) When two atoms that have unpaired electron in their orbitals can overlap to give individual chemical bonds. This process is known as overlapping. 18.
Which of the following molecule does not exist in stable from :(A) O2
(B) F2
(C) S2
(D) N2
18.
. ()
19.
Which of the following atomic orbital does not form d-bond at any axis. (A) d xy
19.
(B) d yz
(C) d z2
(D) dzx
. () 3 : ( : 8)
Marking scheme : For each entry in - +2 If only the bubble(s) corresponding to all the correct matche(es) is (are) darkened 0 In none of the bubbles is darkened –1 In all other cases
1.
: ()
()
(A) C 2H4
(P) Have 2pp – 2pp bond(s)
(B) CS2
(Q) Have 2pp – 3pp bond(s)
(C) Cl2
(R) No p bond
(D) S 8
(S) Molecule have s bond(s) (T) Under line atom have lone pair
1.
2/3
. () - , () - , , () - , , () - , ,
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- : ( ) This section contains 3 . The answer to each question is , ranging from 0 9 (both inclusive) 1.
4(1)
Find the number of hydrogen atom(s) required to complete the covalency of all the atoms in given skeleton. O C–C–C C
1. 2.
An s. (4) Find the number of
2.
Ans. (8)
3.
Find the number of overlapping strengths which are stronger than the 2s–2p :-
s
bond in the molecule of Q. No. 1
1s–1s , 2p–2p , 2s–3p , 3p–3p , 3s–3p , 3s–3s , 2s–2s 3.
2/4
Ans. (2)
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: ()
1.
This section contains 10 . Each question has four choices (A), (B), (C) and (D) out of which is correct. 3(1) Which oxy anion of iodine involve maximum number of d-orbital in bonding : 3– 5– (A) IO¯ (B) IO 5 (C) IO 6 (D) All have same 4
1.
. ()
2.
Which of the following molecule have atleast three similar bond angles : (A) PCl5 (B) NH¯ 2 (C) NH 3 (D) (A) & (C)
2. 3.
. () Choose the species which has sp2 hybridisation and contains one lone pair at central atom :(A) NH3 (B) BF3 (C) NO21 (D) NO31 Ans. (C)
3. 4.
4. 5.
5. 6.
6. 7. 7. 8. 8. 9.
In which of the following reaction hybridisation of underlined atom is different in reactant and product side : (A) NCl3 + 3H2O ® NH3+ 3HOCl (B)SO 2Cl2 + H2O ® H2SO4 + 2HCl (C) XeF6 + H2O ® XeOF+4 2HF (D)NH 3 + HCl ® NH4Cl . () In a compound central atom 'x' used it's three electrons for s-bond formation, one electron for p-bond and one lone pair is still present on it. Then element 'x' may be :(A) P (B) S (C) Cl (D) O Ans. (B) In which of the following molecule 'd' orbitals are used to form p bond as well as used in hybridization of central atom :(A) XeO 3 (B) SO 2 (C) XeO 3F2 (D) POCl 3 An s . (C ) Find the total number of s and p bonds in HCP :(A) 2s, 1p (B) 2s, 2p (C) 1s, 2p (D) Molecule does not exist Ans. (B) What is the hybridisation of Xe in HXeO 6–3 :(A) sp3d3 (B) sp3d2 (C) sp3d (D) No hybridisation in Xe An s . (B )
A + Cl¯ ® B Where A is PCl 5 while B is PCl¯6 Which of the following statement is incorrect : (I) number of d-orbital in hybridization (II) B A to to A B involvement precentage ofofp-character in P–Cl bond increases increases (III)Number of covalent bond in A and B are same (IV) B is product of Lewis acid-base interaction (A) Only I and II (B) Only II and III (C) Only III and IV (D) I, III and IV
9.
. ()
10.
Number of pure atomic orbitals of 'S' which takes part in bond formation in SO 3 is :(A) 6
1 0. 1/1
(B) 3
(C) 4
(D) 2
Ans. (B) INORGANIC CHEQ M /U .1I#Z 1
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()
This section contains . Each question has four choices (A), (B), (C) and (D) out of which are correct. 4(1) 11.
Predict the species having same shape like TeCl4 : (A) IO 2F¯ 2
(B) XeO3
(C) SbF¯ 4
11.
. (, )
12 .
Select the CORRECT options for molecule BrF 5 :-
(D) BrF¯ 4
(A) Total number of lone pair in a molecule is one (B) Maximum number of atom(s) in a plane are four (C) Maximum number of plane which contains maximum number of atoms are three
d z2 and d x 2 – y 2
(D) 'd' orbitals used by 'Br' atom for hybridization are 12.
A n s . (B , C , D )
13.
The hybridisation of sulphur atom in SF 4 is the same as :(A) I in ICl 4–
(B) Xe in XeF4
(C) Xe in XeF2
(D) Br in Br3–
13.
. (, )
14 .
Which of the following statement(s) is/areINCORRECT for SeF6 ? (A) Maximum number of atoms in one plane is 5 (B) Type of overlapping sp3d3–p (C) Total number of triangular faces are 8 (D) Total number of edges are 6
1 4.
Ans. (B, D)
15.
The ratio of lone pair and bond pair in CO32– is the same as :(A) CN–
15.
(B) COCl2
(C) POCl3
(D) NO2Cl
. (, ) ()
This section contains1 each describing theory, experiment, data etc. relate to two paragraphs with two questions on each paragraph. Each question of a paragraph has among the four choices (A), (B), (C) and (D). 3(0) In order to explain the characteristic geometrical shapes of polyatomic molecules like CH4 , NH and H O etc. pauling introduced the concept of hybridisation. According to him the atomic 3 2 orbitals combine to form new set of equivalent orbitals known as hybrid orbitals. Unlike pure orbitals, the hybrid orbitals are used in bond formation. The phenomenon is known as hybridisation which can be defined as the process of intermixing of the orbital s of similar energies so as to redistribute their energies, resulting in the formation of set of new orbitals of equivalent energies and shape. 16 .
Which of the following set of molecule/ions have similar shape ? –
(A) BrF4 , XeOF 4 16 . /2 4
(B) XeF6 , XeOF5
–
–
(C) NO2 , Cl2O
(D)SF
4
, XeO 2F2
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17 .
In which of the following species all bond length are identical ? (A) H 3O
+
(B) SF4
(C) NF3
(D) ICl2
–
17 .
Ans. (A, C, D)
Marking scheme : For each entry in - +2 If only the bubble(s) corresponding to all the correct matche(es) is (are) darkened 0 In none of the bubbles is darkened
3 : ( : 16)
–1 1.
In all other cases
Column -I
Colu mn -II
(Molecu le)
(Hybridisation/ lone pair of central atom)
(A) XeF 4
(P) sp3
(B) ClO4
–
(Q) sp 3d
(C) ClF3
(R) sp
(D) C in HCN
3
(S)sp
d2
(T) 2 lone pair on centr al atom 1.
2.
Ans.(A) - S ,T ; ( B) - P ; ( C) - Q , T ; ( D) - R
-
-
(A) AlCl3 + Cl¯
¾¾ ®
(B) SiF4 + 2F¯ (C) NH3 + H+
(P) Adjacent bond angle at under line atom is decreases
¾¾ ®
(Q) Underline species act as lewis base (R) Out of given reactions Hybrid orbitals of product
¾¾ ®
have maximum s-character (D) BeCl2 + Cl¯ 2.
. ()
(S) d-orbital(s) used in reaction
¾¾ ®
; ()
, ; ()
; ()
,
- : ( )
This section contains 3 . The answer to each question is , ranging from 0 9 (both inclusive) 4(1) 1.
3 2 Find the number of molecules/ions, which are planar and have sp d hybridisation :
ICl4– , SF6
, IF5 , XeF
4
, XeO4 , IO4–
1.
Ans. (2)
2.
Find the number of molecules in which atleast one non-axial d- orbital is involved in hybridisation :XeF5– , IF7 , XeF6 , XeOF5– , SO3F–
2.
An s.(3)
3.
Find the sum of maximum number of atoms in one plane and total numbers of such planes in IF 7
3.
A n s . (7 )
/3 4
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() This section contains 10 . Each question has four choices (A), (B), (C) and (D) out of which is correct. 3(1) Which of the following bond angle order is INCORRECT :(A) O(CH 3)2 < O( C 2H5)2
(B) H 2O < O(Me) 2
(C) H 2O < OCl 2
(D) NH3 < NF3
1.
An s. ( D)
2.
Select the pair given below which have maximum difference of bond angle :(A) NH3, CCl4
(B) BCl3, XeO4
(C) NH4Å, CO2
2.
Ans. (C)
3.
The maximum number of 90° bond angles are present in :(A) PCl 4
Å
(B) PCl 6
1
(C) PCl 5
(D) SO 2, SO 3
(D) XeF 2
3.
Ans. (B)
4.
Give the CORRECT order for adjacent bond angle of BrF 5 , XeF4 , XeF2 , SO3 (A) XeF 4 > BrF 5 > XeF 2 > SO 3
(B) XeF 2 > SO3 > XeF 4 > BrF5
(C) BrF 5 > SO3 > XeF 2 > XeF4
(D) XeF 2 > SO3 > BrF5 > XeF4
4.
Ans. (B)
5.
What are the number of lone pair-bon d pair repulsion at 90° in I(CN) 2– :(A) 2
(B) 3
(C) 6
(D) 4
5.
Ans. (C)
6.
Which of the following molecule is non-linear :(A) (CN)2
(B) C3O2
(C) NO2–
(D) NO2+
6.
Ans. (C)
7.
In ClF 3 Total number of lone pair -bond pair repulsions on central atom at 90° are (With out consideration of distortion):(A) 6
(B) 4
(C) 8
7.
An s. (B)
8.
Select the CORRECT order of bond angle :(A) SF2 > OF2
(B) PBr3 > PI3
(D) 3
(C) CCl4 > CBr 4
(D) OBr 2 > OCl 2
8.
Ans. ( D)
9.
Which of the following pair of moleucle thep bond nature is only pp–pp :(A) XeO3 , XeO 4 (B) SO2 , SO 3 (C) POCl3 , SO2Cl2 (D) CO2 , CS2
9.
Ans. (D)
1/1
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() This section contains . Each question has four choices (A), (B), (C) and (D) out of which are correct. 4(1) 10 .
Which of the following order is/are correct. (A) O 2SF2 < O2SCl2
(X – Sˆ –X bond angle)
(B) O 2SF2 > O2SCl2
ˆ –O bond angle) (O– S
(C) O 2SF2 < O2SCl2
(Total number of lone pair)
(D) O 2SF2 > O2SCl2
(S–X bond length)
10.
. (, )
11 .
Option showing correct order of bond angles is/are (M = central atom, X = Surrounding atom)
ˆ –X) (A) PCl4+ < PBr4+ < PI4+ (X – M
ˆ –X) (B) XeO4 = SiCl4 = SO4–2 (X – M
ˆ –X) (C) NH4 < NH3 < NH2 (X– M
ˆ –X) (D) NH3 > PH3 > AsH 3 (X– M
+
–
1 1.
Ans. (B, D)
12 .
Which of the given order of bond angle is/are CORRECT ? (B) CH3Å > CH 4 > CH31
(A) OF2 > OCl2 > OBr 2 1
(C) NO2 > NO 3 > NO2 Å
1
(D) NH21 > NH3 > NH4Å
1 2.
Ans. (B, C)
13 .
In which of the following presence of double bonds on central atom (M) does
NOT affect
F–M–F idealized bond angle as per hybridization :(A) IOF5
(B) XeO2F4
(C) XeO3F2
1 3.
Ans. (B, C)
14.
Select the CORRECT order of bond angle in :(A) PH3 < AsH3
(B) CH4 > H2O
(C)CH
4
(D) SO2F2
> CCl4
1 4.
Ans. ( B,D)
15 .
Select in which all the F–M–F bond angles are identical :(A) NF4
1 5.
+
(B) XeF5
+
(C) PF 5
(D) CCl4 < BF3
(D) CF 3
+
Ans. (A, D)
() This section contains 1 each describing theory, experiment, data etc. relate to two paragraphs with two questions on each paragraph. Each question of a paragraph has among the four choices (A), (B), (C) and (D). 3(0) Paragraph Hybridisation theory' used to predict the exact geometry of the molecule after finding the number of bond pairs and lone pair of electrons. Lone pair electrons in molecule occupy more space as compared to bond pairs of electrons. The geometry of molecule or electrons are in such a way to minimized electronic repulsions. /2 4
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16 .
CORRECT shape and example of the ABn type molecule is (A = Central atom. B = Surrounding atom) (A) Pentagonal bipyramidal. PCl5
(B) Trigonal planar. BCl3
(C) Square bipyramidal. IF7
(D) Tetrahedral. SF6
1 6.
Ans. (B)
17 .
Types of d-orbitals which may participate in sp 3d3 hybridisation are :(A) dxy, dyz ,dxz (B) dx2–y2 , dxz ,dyz (C) dx2–y2 , dz2 ,dxy (D) dz2, dyz ,dxz
1 7.
A n s. ( C )
() This Section contains . . The codes for the lists. have choices (A), (B), (C) and (D) out of which is correct. 4(0) 18 .
Select CORRECT code for
p-bond
in given molecule :-
Column -I
Co lu mn -II
(Molecule)
(If one atom use it's
'np' orbital for
then type of orbital used for (P) SOF4
(1) np
(Q) CS32–
(2) (n + 1) p
(R) CO
(3) (n + 1) d
(S) BrO3–
(4) (n + 2) d
Co d e:
18 .
(P )
(Q)
(A) 2
3
1
4
(B) 3 (C) 3
4 2
1 1
2 4
(D) 4
2
1
3
(R )
p
p
bond formation
bond formation by other atom)
(S )
An s . (C )
( ) Marking scheme : For each entry in - +2 If only the bubble(s) corresponding to all the correct matche(es) is (are) darkened 0 In none of the bubbles is darkened –1 In all other cases 1.
Match the column ColumnI
ColumnII
(Molecu les/ions) (A) ICl41
(Pro perti es) (P) dz2 orbital is involved in hybridisation of central atom
(B) OClF3
(Q) Maximum number of atoms in a plane = 5
(C) POCl3
(R) The axial (M-X) bond length is shorter than the equitorial (M-X)
(D) IF7
(S) It has atleast one angle less than 120°
bond length (T) It has two lone pair on central atom 1. /3 4
Ans. (A) - P, Q, S, T (B) -P, S (C) - S (D) - P, R, S INORGANIC CHEQ M /U .0I#Z 7
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- ( ) This section contains 5 . The answer to each question is , ranging from 0 (both inclusive) 1.
4(1)
Which of the following chemical species having bond angle greater than the bond angle ˆ –Cl angle in OCl : of Cl– O 2
OBr2 , OF2
, H2O , NH2– , NF3
1.
Ans. (2)
2.
Considering VSEPR and find number of molecule(s) in which two “O” atoms are opposite to each other at central atom :O3, CO2, SO2Cl2, XeO3F2, XeO2F4, XeO4
2.
Ans. (2)
3.
Find the maximum number of atom in one plane in given species CF 2(CF3)2
3.
Ans. (5)
4.
Find the number of species which do not exist in ordinary condition : +
NH4
, SF6 , OF4 , S2
–2
, P2 , SiO
2
, BeCl 4
, NCl
–3
5
, AlF 6
,
–2
CF6
4.
Ans. (5)
5.
Find the number of specie which have maximum four atoms lying in the same plane. PCl2F3 , AlBr3 , ICl 4
5.
/4
–
+
, BrF 3 , PI4
+
–
, H3O , NO3
Ans. (4)
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() This section contains . Each question has four choices (A), (B), (C) and (D) out of which is correct. (1) 1.
A molecule A–B has a bond length of 1.6Å and dipole moment of 0.64 Debye. Find % covalent character in this molecule. [Electronic charge = 4.8 × 10–10 esu) (A) 8.33
(B) 91.67
(C) 17
(D) 83
1.
An s . (B )
2.
Select the INCORRECT statement for molecule ABnL2 where :A = Central atom; n = number of monovalent atom B L = lone pair of electron on central atom (A) Molecule will be planar and non-polar if n = 4 (B) Molecule will be planar and polar if n = 3 (C) Molecule will be non-planar and non-polar if n = 3 (D) Molecule will be planar and polar if n = 2
2.
An s.(C)
4.
Which of the species is polar :(A) SO42– (B) NO3–
4.
Ans. (C)
5.
Which of the following specie is polar :(A) XeF5– (B) XeF2
5.
An s. (D) Cl
Cl
(C) SO2
(D) PCl5
(C) XeF4
(D) XeO3 Cl
Cl
Cl
Cl
6. Cl (II)
(I) CORRECT
6. 7.
1/1
(B) III > II > I > IV
(C) I > III > II > IV
(D) I > II > III > IV
Which of the following species is planar but non-polar. (A) I(CN) 2–
7.
Cl (IV)
order of net dipole moment :
(A) III > I > II > IV Ans. (A)
Cl
Cl (III)
(B) I 3+
(C) NH 2–
(D) ClO 2+
Ans. (A)
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8.
Select the option in which both the species are planar as well as polar :(A) NF3, NO3–
(B) H2O, ClF3
(C) C6H6, B3N3H6
8.
A n s. ( B )
9.
If molecule SFn is polar and planar then value of 'n' will be :(A) 4 (B) 3 (C) 2
9.
Ans. (C)
(D) I3–, I 3+
(D) 6
() This section contains . Each question has four choices (A), (B), (C) and (D) out of which are correct. (1) 10 .
Which of the following chemical specie(s) having permanent dipole-moment. (A) XeF 4 (B) XeO 3F2 (C) XeO 2F2 (D) XeO 3
10.
Ans.(C, D)
11 .
Select the CORRECT options, against the mentioned properties :(A) Sc 3+ > Sc2+ > Sc+ ( Ionization energy) (B) BeF 2 > MgF2 > CaF2 > SrF2 (Lattice energy) (C) XeO3F2 > XeF 4 = XeF2 (Dipole moment) (D) ClO4– = SO42– = PO43– (p-bond strength)
1 1.
Ans. ( A, B)
12 .
Which of the following molecules have non zero dipole moment ? (A) N 2O4 (B) P 4 (C)HNC (D)XeO
12 .
Ans. (C, D )
2
F2
() This section contains each describing theory, experiment, data etc. relate to two paragraphs with two questions on each paragraph. Each question of a paragraph has among the four choices (A), (B), (C) and (D). Paragraph
13.
1 3. 14.
The separation of charges on covalent bonded atom is responsible for the srcin of dipole moment in covalent bond. A quantitative measure of the polarity of bond is it's dipole moment(m), which is the product of charge (q) and distance(r) between the charges. Diatomic molecules containing atoms of _______ elements have dipole moment and they are called ________ diatomic molecule . Select best option respectively to fill the blank space (A)Different ; Nonpolar (B)Same ; Polar (C)Same
; N onpolar
A ns .(D)
(D)Different
MF2 molecule have net resultant dipole moment 1.60 debye. (M = Central atom F = Fluorine) Select impossible geometry of MF2 F
..
(A)
M F F
13 . /2 4
; Polar
.
. .
(B)
(C)
M F
F
. .
.
M
. .
(D) None of these
F
An s . (C ) INORGANIC CHEQ M /U .1I#Z 3
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Paragraph
14 .
Dipole moment is a vector sum of all the individual bond moments. Mathematically it is m = q × d, where q is magnitude of partial charges and d is the dist ance between centres of opposite charges. Its main application includes, determination of polarity of bond, symmetry of molecule and in calculation of % ionic character. Out of the moleucles, which groups includes molecules having zero diploe moment :(A) CO2 , XeF 4 , XeO4 (B) PCl5 , NH3 , H2O (C) IF 7, CCl4, SO3 (D) PCl4+ , ClO 4– , SO2
1 4.
Ans. (A, C)
15 .
The Dipole Moment produced in the molecule
F
is equal to
m
, then for given molecules,
correct options is/are :F
(I)
(II) F
F
F
F
F F
F
(III) F
F
(A) I = IV < III < II (orderof Dipole Moment) (B) mIII 15 .
=
(D) mI
2m
F
(IV) F
(C) m II
F
=
F
F F
3m
= mIV
Ans. (A, B, D)
Trihalides of phosphorus are PF 3, PCl3, PBr3, PI3. PF3 is colourless gas, PCl 3 and PBr3 are colourless liquid and PI 3 is red hexagonal crystals. 1.
Which of the following having highest P–X bond length (A) PF 3
(B) PCl3
(C) PBr3
1.
.()
1.
Which of the following having highest bond angle. (A) PF 3
1.
(B) PCl3
(C) PBr3
(D) PI 3
(D) PI 3
.() () This Section contains . . The codes for the lists. have choices (A), (B), (C) and (D) out of which is correct. (0)
17 .
/3 4
Match the following :Column -I ( Molec u les)
Co lu mn -II (d- orbital(s) in hybridisation )
(P) AlCl4–
(1) d z2 only
(Q) SF4
(2) dxy
(R) IF7
(3) d z2 + d x 2 – y 2 only
(S) XeF4
(4) No d-orbital(s) is/are used INORGANIC CHEQ M /U .1I#Z 3
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Code:
(P )
(Q)
(R )
(S )
4 2 3 4
2 3 1 1
3 1 2 2
1 4 4 3
(A) (B) (C) (D) 17. 18 .
Ans. (D)
Match the column ColumIn
ColumInI
(Compounds) (A) NO3 (B) XeO3 (C) SNF3 (D) ICl2
(Properties) (P) It is non-planar (Q) It has non zero value of dipole moment (R) All possible angles are identical (S) It has pyramidal geometry (T) It has d –p bonding
1
1
p
p
18.
Ans. ( A) - R (B) - P, Q, R , S, T (C) - P, Q, T (D) - R
1 9.
Column -I
Colu mn -II
(A) IF7 (B) SO 2 (C) SF4 (D) CS 2
(P) Planar and polar (Q) Non planar and polar (R) planar and non-polar (S) Non-planar and non-polar (T) d-orbital participates in bonding
19 .
Ans. ( A) - S, T ; ( B) - P, T ; ( C) - Q, T ; ( D) - R - ( )
This section contains . The answer to each question is , ranging from 0 (both inclusive)
(1)
1.
Find the maximum number of chemical species which are planar and polar. HCN, SO 2, HCl, H 2S, SnCl 2
1.
A n s . (5 )
2.
How many of the given species is/are polar. OH
Borazine,
CH
3
, PF2Cl3 , ICl4– , NO2– , ClO
,
OH
CH
2.
A ns.(2)
3.
Find the number of molecule/ions which are polar in nature ? BrF5, I3 , ICl 4 , XeO3F2, PCl 2F3, P(CH3)3F2 1
3.
/4
– 4
, I3 . 1
3
1
Ans. (2)
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4.
Find the number of molecule, which have higher dipole moment from C 6H6 : C6H5Cl , m-C 6H4Cl2 , XeO 4 , PCl 3F2 , PCl 2F3
4.
An s.(3)
6.
Find the number of speci es which is/are non polar ? XeO2F2 , ClF3 , P(CF 3)3(CH3)2 , XeF 2 , ICl 2– , XeO 3F2 , XeO 4 , CH3OH , S 8 , P4
6.
Ans. (6)
/5 4
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