Fertilizer Technology MCQs

Option A: 42-50

Option B: 15-20

Option C: 85-90

Option D: 70-75

Correct Answer: 42-50 ✔

Option A: Calcium ammonium nitrate

Option B: Ferrous sulphate

Option C: Liquid ammonia

Option D: Ammonium sulphate

Correct Answer: Ferrous sulphate ✔

Option A: NH2.CO.NH2

Option B: NH3CO.CH3

Option C: NH.CO2.NH

Option D: NH3.CO2.NH3

Correct Answer: NH2.CO.NH2 ✔

Option A: Sodium Tributyl phosphate (STPP)

Option B: Tricresyl phosphate

Option C: Tributyl phosphate

Option D: Nitrophosphate

Correct Answer: Sodium Tributyl phosphate (STPP) ✔

Option A: Are useful during early stage of the plant growth

Option B: Accelerate fruit formation in later stages of growth

Option C: Lessen the effect of excessive nitrogen application

Option D: None of these

Correct Answer: Accelerate fruit formation in later stages of growth ✔

Option A: Nitrophosphate

Option B: Diammonium phosphate

Option C: Tricresyl phosphate

Option D: Tributyl phosphate

Correct Answer: Nitrophosphate ✔

Option A: Heating in presence of light

Option B: Melting under pressure

Option C: Vaporisation followed by condensation

Option D: None of these

Correct Answer: Vaporisation followed by condensation ✔

Option A: Complex

Option B: Mixed

Option C: Nitrogenous

Option D: Phosphatic

Correct Answer: Mixed ✔

Option A: Urea

Option B: Calcium ammonium nitrate

Option C: Triple superphosphate

Option D: None of these

Correct Answer: Urea ✔

Option A: Al2O3

Option B: Cr2O3

Option C: K2O

Option D: MnO

Correct Answer: K2O ✔

Option A: 10

Option B: 25

Option C: 50

Option D: 80

Correct Answer: 25 ✔

Option A: Nitrogen

Option B: Phosphorous

Option C: Potassium

Option D: Carbon

Correct Answer: Nitrogen ✔

Option A: Nickel

Option B: Iron

Option C: Vanadium pentoxide

Option D: Alumina

Correct Answer: Iron ✔

Option A: Urea

Option B: Liquid NH3

Option C: Ammonium nitrate

Option D: None of these

Correct Answer: Liquid NH3 ✔

Option A: Excess liquid ammonia and liquefied CO2

Option B: Excess liquid ammonia and compressed CO2 gas

Option C: Liquid ammonia and excess compressed CO2

Option D: Compressed ammonia gas and excess compressed CO2

Correct Answer: Excess liquid ammonia and compressed CO2 gas ✔

Option A: Reversible

Option B: Catalytic

Option C: Exothermic

Option D: Endothermic

Correct Answer: Endothermic ✔

Option A: KCl

Option B: K2O

Option C: KNO3

Option D: K2SO4

Correct Answer: K2O ✔

Option A: Chloride

Option B: Sulphate

Option C: Nitrate

Option D: None of these

Correct Answer: Chloride ✔

Option A: Can use only high grade phosphate rock

Option B: Is used less frequently

Option C: Produces a valuable by-product called gypsum

Option D: Is weak acid process

Correct Answer: Is used less frequently ✔

Option A: Fluorapatite

Option B: Di-calcium phosphate

Option C: Mono-calcium phosphate

Option D: Di-ammonium phosphate

Correct Answer: Fluorapatite ✔

Option A: Its activity declines rapidly, if heated to above 520°C

Option B: It decomposes ammonia

Option C: It gets oxidised above 500°C

Option D: None of these

Correct Answer: Its activity declines rapidly, if heated to above 520°C ✔

Option A: Dilute H2SO4

Option B: Concentrated H2SO4

Option C: Concentrated NHO3

Option D: Concentrated HCl

Correct Answer: Dilute H2SO4 ✔

Option A: 10

Option B: 100

Option C: 1000

Option D: 1000

Correct Answer: 10 ✔

Option A: Urea

Option B: Ammonium nitrate

Option C: Ammonium sulphate

Option D: Ammonium chloride

Correct Answer: Ammonium sulphate ✔

Option A: Ammonia

Option B: Ammonium carbonate

Option C: Nitric acid

Option D: None of these

Correct Answer: Ammonium carbonate ✔

Option A: It is hygroscopic and explosive in nature

Option B: It is highly acidic in nature

Option C: It is a liquid at room temperature

Option D: Its nitrogen content is very less

Correct Answer: It is hygroscopic and explosive in nature ✔

Option A: Mixed

Option B: Potassic

Option C: Liquid

Option D: Solid

Correct Answer: Mixed ✔

Option A: A mixed fertiliser

Option B: A straight fertiliser

Option C: A complex fertiliser

Option D: Not a fertiliser; it is an explosive

Correct Answer: A complex fertiliser ✔

Option A: Urea

Option B: Biuret

Option C: Ammonia water

Option D: None of these

Correct Answer: Urea ✔

Option A: 30-35

Option B: 15-20

Option C: 65-70

Option D: 85-90

Correct Answer: 15-20 ✔

Option A: K2O

Option B: SiO3

Option C: V2O5

Option D: U2O3

Correct Answer: V2O5 ✔

Option A: Very high pressure

Option B: Atmospheric pressure

Option C: Room temperature

Option D: > 600°C

Correct Answer: > 600°C ✔

Option A: Are useful during early stage of the plant growth

Option B: Stimulate early growth and accelerate seeding

Option C: Help in development of starches of potatoes and grain

Option D: None of these

Correct Answer: Help in development of starches of potatoes and grain ✔

Option A: CAN

Option B: Ammonium sulphate

Option C: Ammonium nitrate

Option D: Superphosphate

Correct Answer: Ammonium sulphate ✔

Option A: Pt

Option B: K2O

Option C: Al2O3

Option D: Ni

Correct Answer: K2O ✔

Option A: Coke oven

Option B: Producer

Option C: Natural

Option D: Coal

Correct Answer: Natural ✔

Option A: Powder

Option B: Granules

Option C: Lumps

Option D: Flakes

Correct Answer: Granules ✔

Option A: During the early stage of growth to promote development of stem and leaves

Option B: For accelerating fruit formation in later stage of growth

Option C: To lessen the effect of excessive potash application

Option D: None of these

Correct Answer: During the early stage of growth to promote development of stem and leaves ✔

Option A: Exothermic

Option B: Endothermic

Option C: Autocatalytic

Option D: None of these

Correct Answer: Exothermic ✔

Option A: 38

Option B: 68

Option C: 82

Option D: 98

Correct Answer: 98 ✔

Option A: Triple superphosphate

Option B: Tricresyl phosphate

Option C: Fluorapatite

Option D: Superphosphate

Correct Answer: Tricresyl phosphate ✔

Option A: Pyro

Option B: Ortho

Option C: Meta

Option D: None of these

Correct Answer: Meta ✔

Option A: Hydrochloric

Option B: Sulphuric

Option C: Nitric

Option D: Phosphoric

Correct Answer: Sulphuric ✔

Option A: 50-80

Option B: 250-400

Option C: 1000-1200

Option D: 800-900

Correct Answer: 250-400 ✔

Option A: Lurgi (high pressure) gasifier

Option B: Kopper-Totzek gasifier

Option C: Gasifier working at 20 atm

Option D: Gasifier working at 40 atm

Correct Answer: Kopper-Totzek gasifier ✔

Option A: P2O3

Option B: PCl5

Option C: P2O5

Option D: H3PO4

Correct Answer: P2O5 ✔

Option A: Stabilisation

Option B: Increasing the effectiveness

Option C: Improving the strength & heat resistance

Option D: All A, B & C

Correct Answer: All A, B & C ✔

Option A: Fuel

Option B: H2

Option C: N2

Option D: O2

Correct Answer: H2 ✔

Option A: Of the better CaO/SiO2 balance for slag formation

Option B: CaO content is less

Option C: It is cheap

Option D: It produces low cost product

Correct Answer: Of the better CaO/SiO2 balance for slag formation ✔

Option A: Steam reforming of naphtha and cracking of natural gas

Option B: Electrolysis of water

Option C: Cryogenic separation of hydrogen from coke oven gas

Option D: All A., B. and C.

Correct Answer: D. All A., B. and C. ✔

Option A: Phosphorous pentoxide

Option B: Phosphorous oxychloride

Option C: Ammonium phosphate

Option D: Calcium phosphate

Correct Answer: Phosphorous oxychloride ✔

Option A: P

Option B: P2

Option C: P3

Option D: P4

Correct Answer: P ✔

Option A: Urea

Option B: Ammonium sulphate

Option C: Superphosphate

Option D: Potassium nitrate

Correct Answer: Ammonium sulphate ✔

Option A: Salt & coke

Option B: Sand & coke

Option C: And coke

Option D: And sand

Correct Answer: Sand & coke ✔

Option A: In liquid phase

Option B: In vapour phase

Option C: At very high temperature

Option D: At very low pressure (vacuum)

Correct Answer: In liquid phase ✔

Option A: H2 separation from coke oven gas

Option B: Steam reforming of naphtha

Option C: Cracking of natural gas

Option D: Electrolysis of water

Correct Answer: Electrolysis of water ✔

Option A: Carbonate

Option B: Phosphate

Option C: Bicarbonate

Option D: Silicate

Correct Answer: Carbonate ✔

Option A: Nitric acid

Option B: Phosphoric acid

Option C: Urea

Option D: Calcium ammonium nitrate (CAN)

Correct Answer: Urea ✔

Option A: Nutrient supply

Option B: Texture

Option C: Water holding capacity

Option D: All A., B. and C.

Correct Answer: D. All A., B. and C. ✔

Option A: Increases biuret formation

Option B: Decreases biuret formation

Option C: Is undesirable

Option D: Does not effect biuret formation

Correct Answer: Decreases biuret formation ✔

Option A: Phosphoric acid

Option B: Superphosphate

Option C: Phosphorous

Option D: Triple superphosphate

Correct Answer: Phosphorous ✔

Option A: 60

Option B: 30

Option C: 95

Option D: 100

Correct Answer: 60 ✔

Option A: Increased biuret formation

Option B: High corrosion rate

Option C: Increased cost of equipment

Option D: All A., B. & C.

Correct Answer: D. All A., B. & C. ✔

Option A: Nitrogen

Option B: Potassium

Option C: Phosphorous

Option D: Sulphur

Correct Answer: Sulphur ✔

Option A: By fractionation of liquefied air

Option B: By dissociating oxides of nitrogen

Option C: From coal gas (coke oven gas)

Option D: From producer gas

Correct Answer: By fractionation of liquefied air ✔

Option A: Ammonium sulphate

Option B: Calcium ammonium nitrate

Option C: Urea

Option D: Liquid ammonia

Correct Answer: Liquid ammonia ✔

Option A: Increased degree of conversion of CO2 to urea

Option B: Decreased degree of conversion of NH3 to urea

Option C: Decreased yield of urea

Option D: Decreased specific volume of molten mass

Correct Answer: Increased degree of conversion of CO2 to urea ✔

Option A: Phosphoric acid

Option B: Coke

Option C: Sulphuric acid

Option D: Silica and coke

Correct Answer: Silica and coke ✔

Option A: It is cheaper

Option B: Nitrogen content is higher

Option C: It is not poisonous

Option D: It is easy to manufacture

Correct Answer: Nitrogen content is higher ✔

Option A: Counteract burning

Option B: Avoid caking & hardening

Option C: Produce bulk

Option D: Increase its solubility

Correct Answer: Avoid caking & hardening ✔

Option A: Water

Option B: Naphtha

Option C: Tar

Option D: Coal/coke oven gas

Correct Answer: Tar ✔

Option A: NO

Option B: NO2

Option C: N2H5

Option D: NH3

Correct Answer: NO ✔

Option A: Nickel

Option B: Platinum

Option C: Silica gel

Option D: Rhodium

Correct Answer: Nickel ✔

Option A: Autocatalytic

Option B: Endothermic

Option C: Exothermic

Option D: Non-catalytic

Correct Answer: Endothermic ✔

Option A: Comparatively higher pressure drop

Option B: High cost of the high pressure vessel used for the reactor

Option C: Higher pumping cost

Option D: Chances of entrainment and disturbance of catalyst bed

Correct Answer: High cost of the high pressure vessel used for the reactor ✔

Option A: Calcium nitrate

Option B: Calcium ammonium nitrate

Option C: A mixture of nitric acid and lime

Option D: A mixture of ammonium nitrate and calcium nitrate

Correct Answer: Calcium ammonium nitrate ✔

Option A: (CH3 C6 H4)3 PO4

Option B: Ca10(PO4)3F6

Option C: (NH4)2HPO4

Option D: NH4H2PO4

Correct Answer: (CH3 C6 H4)3 PO4 ✔

Option A: Having about 40% N2

Option B: Not hygroscopic

Option C: Not prone to explosive thermal decomposition

Option D: Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer

Correct Answer: Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer ✔

Option A: Vanadium pentoxide

Option B: No

Option C: Alumina

Option D: Nickel

Correct Answer: No ✔

Option A: Phosphoric

Option B: Nitric

Option C: Sulphuric

Option D: Hydrochloric

Correct Answer: Phosphoric ✔

Option A: Nitrogenous

Option B: Phosphatic

Option C: Potassic

Option D: None of these

Correct Answer: Phosphatic ✔

Option A: Urea

Option B: CAN

Option C: Ammonium sulphate

Option D: Calcium cyanamide

Correct Answer: Calcium cyanamide ✔

Option A: Endothermic

Option B: Exothermic

Option C: Irreversible

Option D: None of these

Correct Answer: Exothermic ✔

Option A: Pyro

Option B: Ortho

Option C: Meta

Option D: None of these

Correct Answer: Pyro ✔

Option A: 5, 10, 5% respectively of N2, P2O5 and K2O

Option B: Only 5 to 10% active fertiliser constituents

Option C: 5 to 10% filler & carrier of soil conditioners

Option D: None of these

Correct Answer: 5, 10, 5% respectively of N2, P2O5 and K2O ✔

Option A: Ammonium phosphate

Option B: Superphosphate

Option C: Triple superphosphate

Option D: None of these

Correct Answer: Ammonium phosphate ✔

Option A: Low pressure

Option B: High pressure

Option C: Very high temperature

Option D: Atmospheric pressure; as the pressure has no effect on conversion

Correct Answer: High pressure ✔

Option A: Oxidation of ammonia

Option B: CaNO3 + H2SO4 reaction

Option C: Passing air through high voltage electric arc

Option D: None of these

Correct Answer: Oxidation of ammonia ✔

Option A: Increases

Option B: Decreases

Option C: Remains unaltered

Option D: Can either increase or decrease depends on biuret content

Correct Answer: Increases ✔

Option A: 10

Option B: 46

Option C: 80

Option D: 94

Correct Answer: 46 ✔

Option A: Urea

Option B: Ammonium nitrate

Option C: Calcium ammonium nitrate (CAN)

Option D: Ammonium sulphate

Correct Answer: Ammonium nitrate ✔

Option A: Hold back stem growth and halt plants at a desired height

Option B: Cause early maturation of plants

Option C: Accelerate ripening of food and grain

Option D: Produce seedless fruit

Correct Answer: Hold back stem growth and halt plants at a desired height ✔

Option A: Hydrogen peroxide, air and water

Option B: Anhydrous ammonia and air

Option C: Anhydrous ammonia, air and water

Option D: Wet ammonia, air and water

Correct Answer: Anhydrous ammonia, air and water ✔