Fauji fertilizer internship test paperFull description
I prepared this report at the end of my internship at Fauji Fertilizer Company (FFC) during June-July 2013.
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The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.
1.
30
2.
60
3.
90
4.
100
Ammonium sulphate fertiliser is
1.
the highest concentration nitrogenous fertiliser.
2.
the best fertiliser for paddy.
3.
a basic fertiliser.
4.
a neutral fertiliser.
Ammonia synthesis gas is produced from natural gas by
1.
thermal cracking
2.
steam reforming
3.
partial oxidation
4.
hydrogenation
Action of phosphoric acid on rock phosphate produces
1.
triple superphosphate
2.
superphosphate
3.
gypsum
4.
phosphoric acid
Calcium ammonium nitrate (CAN) is
1.
a straight fertiliser
2.
not a fertiliser ; it is an explosive
3.
a complex fertiliser
4.
a mixed fertiliser
Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam stea m to carbon maintained in the process of steam reforming of naphtha ?
1.
3.5:1
2.
10:1
3.
1.5:1
4.
15:1
Red phosphorous is changed into white phosphorous by
1.
heating in presence of light.
2.
melting under pressure.
3.
vaporisation followed by condensation.
4.
none of these.
Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
1.
250-400
2.
50-80
3.
1000-1200
4.
800-900
During conversion of ammonium carbamate into urea, presence of large excess of water
1.
reduces the evaporator load by diluting the urea solution.
2.
increases the yield of urea.
3.
adversely affects the yield of urea.
4.
does not affect the yield of urea.
Urea is a __________ fertiliser.
1.
potassic
2.
phosphatic
3.
nitrogenous
4.
none of these
Two gas based fertiliser plants are located in
1.
Jharkhand and Chattisgarh
2.
Maharashtra and Gujarat
3.
Maharashtra and Orissa
4.
Gujarat and Madhya Pradesh
Conditioners like finely divided peat are added to the fertiliser to
1.
counteract burning.
2.
increase its solubility.
3.
avoid caking & hardening.
4.
produce bulk.
Ammonium nitrate (a fertiliser) is coated with limestone powder to
1.
avoid the risk of explosion.
2.
cut down its production cost.
3.
add extra nutrient as fertiliser.
4.
increase its nitrogen content.
Lower temperature and large excess of ammonia in urea melt
1.
is undersirable
2.
increases biuret formation
3.
decreases biuret formation
4.
does not effect biuret formation
Pick out the wrong statement.
1.
'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock &
sulphuric acid.
2.
Chemically unreactive nature of red phosphorous is due to its polymeric structure.
3.
Red phosphorous is the most reactive allotropic form of phosphorous.
4.
Red phosphorous, which is used in the manufacture of safety matches, is converted into white
phosphorous by vaporisation followed by condensation. Which of the following does not come under the category of ‘secondary nutrient’ for plant growth?
1.
Sulphur
2.
Calcium
3.
Magnesium
4.
Oxygen
Hydrogen content of coke oven gas is __________ percent.
1.
58
2.
4
3.
84
4.
22
Pick out the wrong statement.
1.
All the nitrogenous fertilisers are not soluble in water.
2.
The phosphorous nutrient makes the plant stem stronger and increases its branches.
3.
A straight fertiliser contains only one nutrient.
4.
Calcium cynamide is used as weed killer in onion fields.
Superphosphate is manufactured by reacting phosphate rock with
1.
sulphuric acid
2.
aluminium chloride
3.
acetic acid
4.
none of these
Commercial fertilisers are available mostly in the form of
1.
grannules
2.
powder
3.
lumps
4.
flakes
Electric furnace method for production of phosphorous uses phosphate rock
1.
and sulphuric acid
2.
and coke
3.
and phosphoric acid
4.
silica and coke
Prilling tower is found in the flowsheet for the manufacture of
1.
triple superphosphate
2.
superphosphate
3.
urea
4.
ammonia
Maximum stability of white phosphorous is at
1.
very high pressure
2.
room temperature
3.
atmospheric pressure
4.
>600°C
In calcium ammonium nitrate (CAN) fertil-ser
1.
nitrate nitrogen is quick acting
2.
ammoniacal nitrogen is quick acting
3.
nitrate nitrogen is slower acting
4.
none of these
Urea is formed only
1.
at very high temperature
2.
in liquid phase
3.
in vapour phase
4.
at very low pressure (vacuum)
Reaction of anhydrous liquid ammonia with orthophosphoric acid produces
1.
ammonium phosphate
2.
superphosphate
3.
triple superphosphate
4.
none of these
Electric process as compared to wet process (for the manufacture of phosphoric acid)
1.
produces a valuable by-product called gypsum.
2.
is used less frequently.
3.
is weak acid process.
4.
can use only high grade phosphate rock.
Nitrogenous fertiliser is required
1.
to lessen the effect of excessive potash application.
2.
for accelerating fruit formation in later stage of growth.
3.
during the early stage of growth to promote development of stem and leaves.
4.
none of these.
Potassic fertilisers do not promote the development of
1.
starches of potatoes & grains.
2.
stems & leaves during early stage of plant growth.
3.
fibrous materials of plants.
4.
sugar of fruits & vegetables.
Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process.
1.
Le-chatlier's
2.
Haber's
3.
Du-pont's
4.
Stengel
Ammonium sulphate can be produced by reacting gypsum with
1.
ammonium carbonate
2.
ammonia
3.
nitric acid
4.
none of these
Ammonium phosphate is a __________ fertiliser.
1.
mixed
2.
complex
3.
nitrogenous
4.
phosphatic
Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction.
1.
endothermic
2.
reversible
3.
catalytic
4.
exothermic
Catalyst used in Haber’s process for ammonia production is
1.
reduced iron oxide
2.
silica gel
3.
vanadium pentoxide
4.
nickel
Which fertiliser is made (using coke oven gas) in by products plant of an integrated steel plant ?
1.
CAN
2.
Ammonium sulphate
3.
Superphosphate
4.
Urea
Reaction of orthophosphoric acid with soda ash produces
1.
tributyl phosphate
2.
tricresyl phosphate
3.
sodium tripolyphosphate (STPP)
4.
nitrophosphate
Commercial production of hydrogen for the manufacture of nitrogeneous fertilisers is done by
1.
steam reforming of naphtha and cracking of natural gas.
2.
all of three
3.
cryogenic separation of hydrogen from coke oven gas.
4.
electrolysis of water.
Heating of orthophosphoric acid to 250°C produces
1.
no change in it
2.
pyrophosphoric acid
3.
metaphosphoric acid
4.
none of these
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
1.
carbonate
2.
phosphate
3.
bicarbonate
4.
silicate
Fertiliser plant making ammonium sulphate employing g ypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at
1.
Rourkela (under SAIL)
2.
Bokaro (under SAIL)
3.
Baroda (under G.S.F.C.)
4.
Sindri (under FCI)
Catalyst used in steam reforming of naphtha is
1.
platinum
2.
silica gel
3.
nickel
4.
rhodium
Rock phosphate constitutes mainly of
1.
fluorapatite
2.
mono-calcium phosphate
3.
di-calcium phosphate
4.
di-ammonium phosphate
Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas?
1.
Naphtha
2.
Tar
3.
Water
4.
Coal/coke oven gas
Heating of orthophosphoric acid to about 900°C, produces
1.
pyrophosphoric acid
2.
metaphosphoric acid
3.
none of these
4.
no change in it
__________ is the most suitable fertiliser for paddy.
1.
Ammonium sulphate
2.
Superphosphate
3.
Urea
4.
Potassium nitrate
Reaction of calcium fluorapatite with sulphuric acid produces
1.
ortho-phosphoric acid.
2.
red phosphorous.
3.
triple superphosphate.
4.
simple superphosphate
Nitrogen content of calcium ammonium nitrate (CAN) is _ _________ percent.
1.
25
2.
10
3.
50
4.
80
Monte catini process is used for the manufacture of
1.
phosphoric acid
2.
nitric acid
3.
urea
4.
calcium ammonium nitrate (CAN)
Nitrogen content in ammonium sulphate (a fertiliser) is around __________ percent.
1.
5
2.
20
3.
60
4.
65
Nitrogen content of urea is about __________ percent.
1.
94
2.
80
3.
46
4.
10
I argest capacity nitrogenous fertiliser plants (2700 tons of NH3 per day) (2 Nos) in India are located at
1.
Talchar (Orissa) and Ramagundam (A.P.) both under FCI.
2.
Thal-Vaishet (under RCF in Maharashtra) and Hazira (under IFFCO in Gujarat)
3.
Korba (M.P.) and Talchar (Orissa) both under FCI.
4.
Haldia (W.B) and Namrup (Assam) both under HFC.
Main component of bone ash is
1.
calcium phosphate
2.
calcium carbonate
3.
calcium sulphate
4.
sodium phosphate
Maximum nitrogen percentage is in
1.
liquid ammonia.
2.
ammonium sulphate.
3.
calcium ammonium nitrate.
4.
urea
NPK fertiliser is a __________ fertiliser.
1.
mixed
2.
nitrogenous
3.
complex
4.
phosphatic
Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because
1.
it is a liquid at room temperature.
2.
it is hygroscopic and explosive in nature.
3.
it is highly acidic in nature.
4.
its nitrogen content is very less.
Phosphatic fertilisers
1.
lessen the effect of excessive nitrogen application.
2.
are useful during early stage of the plant growth.
3.
accelerate fruit formation in later stages of growth.
4.
none of these
In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.
1.
Fauser-Monte Catini
2.
Claude
3.
Udhe
4.
Kellog
Triple superphosphate is made by reacting phosphate rock with __________ acid.
1.
sulphuric
2.
phosphoric
3.
hydrochloric
4.
nitric
The fertiliser plant getting hydrogen by electrolysis of water is situated at
1.
Rourkela
2.
Namrup
3.
Nangal
4.
Korba
The optimum size of the ammonia plant is __________ tons/day.
1.
1000
2.
1000c
3.
10
4.
100
Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.
1.
950-1050
2.
250-300
3.
1400-1450
4.
500-750
Main constituent of phosphate rock is
1.
calcium fluoride
2.
flour apatite
3.
calcium phosphate
4.
ammonium phosphate
Which is the best fertiliser for paddy ?
1.
Ammonium sulphate
2.
Superphosphate
3.
Nitro-phosphate
4.
Potassium nitrate
Oxidation of ammonia is
1.
autocatalytic
2.
exothermic
3.
endothermic
4.
non-catalytic
Catalyst used in desulphurisation of naphtha is
1.
Pt-Rh
2.
nickel
3.
silica gel
4.
Co-Mo
Ammonia synthesis reaction is
1.
exothermic
2.
endothermic
3.
autocatalytic
4.
none of these
Gas based fertiliser plants use
1.
natural gas as heating medium.
2.
coal gas as heating medium.
3.
natural gas as a source of hydrogen.
4.
coal gas as a source of hydrogen.
Urea (a nitrogeneous fertiliser) is produced from carbon dioxide and
1.
ammonia
2.
nitric acid
3.
nitric oxide
4.
ammonium nitrate
Reaction of orthophosphoric acid with phosphate rock produces
1.
superphosphate
2.
triple superphosphate
3.
monoammonium phosphate
4.
metaphosphoric acid
Temperature and pressure in ammonia converter is
1.
450 atm, 1000°C
2.
200 atm, 1000°C
3.
450 atm, 200°C
4.
450 atm, 550°C
Dehydration of ammonium carbamate produces
1.
ammonia water
2.
biuret
3.
urea
4.
none of these
Which of the following fertilisers is used as a cattle f eed?
1.
Urea
2.
Calcium ammonium nitrate
3.
Superphosphate
4.
Ammonium sulphate
Biuret formation in urea is kept at minimum (< 1 %), because it is
1.
explosive in nature.
2.
corrosive in nature.
3.
toxic and harmful to some crops.
4.
helpful in decomposition of urea.
Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of __________ this is normally not done.
1.
high corrosion rate
2.
increased cost of equipment
3.
all of three
4.
increased biuret formation
__________ is not a fertiliser.
1.
Ammonium sulphate
2.
Liquid ammonia
3.
Calcium ammonium nitrate
4.
Ferrous sulphate
Which of the following fertilisers contains the least percentage of nitrogen?
1.
Urea
2.
Ammonium phosphate
3.
Ammonium sulphate
4.
Liquid ammonia
__________ is the undesirable by-product produced in the manufacture of urea.
1.
Biuret
2.
Ammonium carbamate
3.
Ammonium carbonate
4.
Carbon dioxide
Which of the following gasifiers can be attached to coal based fertiliser plants ?
1.
Lurgi (high pressure) gasifier.
2.
Kopper-Totzek gasifier.
3.
Gasifier working at 20 atm.
4.
Gasifier working at 40 atm.
Coal based fertiliser plants at Ramagundam (Andhra Pradesh) and Talchar (Orissa)
1.
gasify coal to get hydrogen from coal gas.
2.
use coal as conditioner in fertiliser.
3.
use coal as filler in fertiliser.
4.
use coal for heating purpose.
pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.
