SAMPLE PAPER FOR NATIONAL SCIENCE OLYMPIAD (NSO)STAGE-II CLASS -VIII Time : 1 Hr.
Max. Marks : 50
GENERAL INSTRUCTIONS 1. The booklet given in the examination hall will be the Question Paper. An OMR Answer Sheet will also be provided along with the Question Paper. 2. A candidate has to write his/her answers in the OMR sheet by darkening the appropriate bubble with the help of HB Pencil as the correct answer(s) of the question attempted. 3. Paper carries 50 questions. There are 2 sections, 15 in Section I and 35 in Section II. 4. Blank papers, clip boards, log tables, slide rule, calculators, mobile or any other electronic gadgets in any form is not allowed. 5. Write your Name & Roll No. in the space provided in the bottom of this booklet. 6. Before answering the paper, fill up the required details in the blank space provided in the answer sheet. 7. There is no negative marking. Do not spend too much time on a particular question. 8. No rough sheets will be provided by the invigilators. All the rough work is to be done in the blank space provided in the question paper. 9. In case of any dispute, the answer filled in the OMR sheet available with the institute shall be final.
Name : ____________________________________________ Roll No. : _______________________________
MENTAL ABILITY 1.
Successive discount of 10% and 5% is equivalent to : (A) 16.5% (B) 15% (C) 15.5%
(D) 14.5%
2.
The ratio between the side of a room is 5 : 3. The cost of white washing the ceiling of the room at 50 P per square m is Rs. 270 and the cost of papering the walls at 10 P per square metre is Rs. 48. The height of the room is : (A) 6 m (B) 8 m (C) 5 m (D) 10 m
3.
If the circumference of a circle is increased by 20%, then its area will be increased by : (A) 44% (B) 32% (C) 40% (D) None of these
4.
A tent is in the form of right circular cone 10.5 m high, the diameter of the base being 13 m. If 8 men are in the tent, find the average number of cubic metres of air space per man : (A) 32
5.
3 58
7.
(C) 36
9 13
(D) 58
3 32
In the adjoining figure AB || CD and PQ, QR intersects AB and CD both at E, F and G, H respectively. Given that m PEB= 80º, m QHD = 120º and m PQR = xº, find the value of x :
(A) 40º 6.
(B) 59.75
(B) 20º
If 3x + 3x+1 = 36. then the value of xx is : (A) 64 (B) 3125
(C) 100º
(D) 30º
(C) 81
(D) 4
Mr. Modi can copy 40 pages in 10 minutes, Mr Xerox and Mr. Modi both working together can copy 250 pages in 25 minutes. In how many minutes Mr. Xerox can copy 36 pages ? (A) 5 minutes (B) 6 minutes (C) 3 minutes (D) 12 minutes
Directions : (8) In each of the following questions four positions of the same dice have been shown. You have to see these figures and select the number opposite to the number as asked in each question.
8 (i) (ii) Which number is opposite to number 5 ? (A) 4 (B) 6
(iii) (C) 1
(iv) (D) 3
(Space For Rough Work)
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Directions : (9 to 10) Find the missing numbers : 9.
5, 14, 27, 44, 65, ? (A) 88
10.
16 15 3
14 34 16
(D) 130
(B) 16
(C) 17
(D) 14
If MOON is coded as 19 and RED is coded as 9, how would you code SISA in the same code language ? (A) 15
12.
(C) 109
4 ? 15
(A) 15 11.
(B) 90
(B) 16
(C) 13
(D) 18
If × means , – means ×, means + and + means –, then (3 – 15 )×8 + 6 = ? (A) 8
13.
(B) 4
(C) 2
(D) –1
There are five different houses, A to E, in a row. A is to the right of B; E is to the left of C and right of A;B is to the right of D. Which of the following house is in the middle? (A) A
(B) B
(C) D
(D) E
Direction : (14) In the following question, there are two terms to the left of the sign :: which are related in some way. Obtain the same relationship between the term to the right of the sign :: from one of the four alternatives given under it. 14.
Light : Ray : : Sound : ? (A) Hear
15.
(B) Wave
(C) Audio
(D) Pitch
How many triangles are there in the following figure ?
(A) 19
(B) 21
(C) 27
(D) 48
(Space For Rough Work)
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SCIENCE 16.
A ray of light incident on a plane mirror as shown in the diagram below. Calculate the new angle of incidence if the mirror is rotated through 10º.
30º Direction of rotation (A) 20º 17.
19.
(D) 60º
(B)
(C)
(D)
Anions are : (A) ions which are negatively charged
(B) ions which are directed towards anode
(C) ions which loose electrons at anode
(D) All of them
Which of the following is not a unit of force ? (A) Dyne
20.
(C) 70º
Which of the following diagrams correctly represent the passage of a ray of light through a concave lens ?
(A)
18.
(B) 10º
(B) Kg m s–2
(D) Kg m2 s–2
(C) g cm s–2
A force on a particle of mass 200 g displaces it through a distance of 400 cm in 2 s. If the particle is initially at rest then magnitude of the force will be : (A) 0.1 N
21.
(C) 0.3 N
(D) 0.4 N
Name the constellation of which Pole Star is a part. (A) Ursa Major
22.
(B) 0.2 N
(B) Ursa Minor
(C) Orion
(D) Scorpio
The planet which takes the maximum time to revolve around the sun is : (A) Mars (B) Saturn (C) Neptune
(D) Uranus
(Space For Rough Work)
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23.
24.
What is the only dwarf planet found in inner solar system : (A) Mercury (B) Eros (C) Pluto The point at which the rocks on either side of the plate give way is called : (A) focus
25.
(D) Ceres
(B) epicentre
(C) aftershock
(D) fault
If two plane mirrors are inclined at an angle of 60º then the number of images formed by the object placed between these mirrors are : (A) 4
26.
27.
28.
30.
31.
(B) Increases
(C) Remains the same
(D) Is independent of temperature
Friction can be increased by : (A) making the surface rough (C) both (A) and (B)
(B) increasing the mass of object (D) none of these
Aneroid barometer means (B) without solid
(C) without gas
(D) without liquid and gas
Which of the following relation(s) is/are correct (A) 1 mm of Hg = 1 torr
(B) 1 KPa = 103 Pa
(C) Both (A) and (B)
(D) None of these
Allotropes differs in the (A) number of neutrons
(B) number of protons
(C) way their atoms are arranged
(D) number of electrons
Destructive distillation of wood does not give(B) wood charcoal
(C) pyroligneous acid
(D) CO2
(B) petrol
(C) water
(D) none of these
(C) CH4
(D) H2
Diamond is soluble in (A) alcohol
33.
(D) 6
(A) Decreases
(A) wood tar 32.
(C) 5
With the rise of temperature, the velocity of sound :
(A) without liquid 29.
(B) 3
Which of the following gas is non-combustible ? (A) CO
(B) CO2
(Space For Rough Work)
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34.
Which of the following is a compound ? (A) The black solid residue left when sugar is charred. (B) N2 gas (C) Air (D) CO2
35.
Up higher in the mountains, water boils (A) at 100ºC
36.
37.
40.
41.
(B) butane and isobutane
(C) methane
(D) ethane
A non-metal used to preserve food stuffs is(C) carbon
(D) none of these
(B) MgO
(C) ZnO
(D) CaO
Iron combines with oxygen to form (A) Fe (II) oxide , Fe (III) oxide
(B) Fe (II) oxide, Fe (IV) oxide
(C) Fe(I) oxide , Fe (II) oxide
(D) Fe (I) oxide, Fe (III) oxide
Enzymes for respiration / oxidation of food are found in (A) nucleus
(B) mitochondria
(C) golgi body
(D) endoplasmic reticulum
HCl is secreted by (B) Peptic cells
(C) Oxyntic cells
(D) None of these
(C) Blue light
(D) Violet light
The rate of photosynthesis will be maximum in (A) Red light
43.
(B) phosphorus
Amphoteric oxide is -
(A) Zymogen cells 42.
(D) above 200ºC
(A) butane and methane
(A) Na2O 39.
(C) above 100ºC
LPG mainly consists of -
(A) nitrogen 38.
(B) below 100ºC
(B) Green light
Which of the following is a characteristic of respiratory organ ? (A) Thin walled
(B) Vascular
(C) Moist
(D) All of the above
(Space For Rough Work)
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44.
Formation of blood corpuscles is known as (A) haemolysis
45.
(B) rouleaux
(B) Pyramid
48.
(B) Oviduct
(C) Uterus
(D) Vestibule
List-I
List-II
Branches of science
Details of study
a. Taxonomy
1. Functional movements
b. Mycology
2. Classification
c. Morphology
3. Shape and structure
d. Physiology
4. fungus
a
b
c
d
(A)
2
3
1
4
(B)
2
4
3
1
(C)
1
2
3
4
(D)
3
4
2
1
Study of fossil is called (B) Palaeontology
(C) Misology
(D) Systematics
(C) 80 S
(D) 100 S
Bacterial ribosomes are (A) 70 S
50.
(D) Nephridia
Match the following :
(A) Paleobotany 49.
(C) Henle’s loop
In human fertilisation takes place in the (A) Follicle
47.
(D) phagocytosis
The basic functional unit of Human kidney is (A) Nephron
46.
(C) haemopoiesis
(B) 60 S
Emasculation is achieved by (A) removal of stigma
(B) removal of anthers
(C) removal of sepal & petals
(D) removal of gynoecium
(Space For Rough Work) Que s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Ans
D
C
A
D
B
D
B
C
B
A
B
C
A
B
C
Que s
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Ans
C
B
D
D
D
B
C
D
A
C
B
A
B
C
C
Que s
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
Ans
D
D
B
D
B
B
A
C
A
B
B
A
D
C
A
Que s
46
47
48
49
50
Ans
B
B
B
A
B
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