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MCQs 1: Main component of bone ash is _________________?

Calcium sulphate Calcium phosphate Calcium carbonate Sodium phosphate
Answer Explanation

MCQs 2: Ammonium nitrate (a fertiliser) is coated with limestone powder to ____________________?

Increase its nitrogen content Cut down its production cost Avoid the risk of explosion Add extra nutrient as fertiliser
Answer Explanation

MCQs 3: Heating of ortho-phosphoric acid to about 900°C, produces_________________?

Meta-phosphoric acid Pyrophosphoric acid No change in it None of these
Answer Explanation

MCQs 4: Prilling tower is found in the flowsheet for the manufacture of__________________?

Ammonia Urea Superphosphate Triple superphosphate
Answer Explanation

MCQs 5: Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits ?

Nitrogenous fertilisers Phosphatic fertilisers Potassic fertiliser None of these
Answer Explanation

MCQs 6: Both white phosphorous as well as red phosphorous_________________?

Are soluble in CS2 Burns when heated in air Reacts with hot caustic soda solution to give Phosphine All A., B., and C.
Answer Explanation

MCQs 7: Dehydration of ammonium carbamate to yield urea is a/an __________________ reaction?

Exothermic Endothermic Autocatalytic Catalytic
Answer Explanation

MCQs 8: Nitrogen content in ammonium sulphate (a fertiliser) is around ______________ percent?

5 20 50 65
Answer Explanation

MCQs 9: Flushing liquor used for cooling coke oven gas constitutes of __________________?

Ammoniacal liquor K2CO3 solution Dilute H2SO4 Dilute HCl
Answer Explanation

MCQs 10: Which of the following is not a mixed fertiliser ?

Nitrophosphate Calcium ammonium nitrate (CAN) Ammonium phosphate None of these
Answer Explanation

MCQs 11: Leaching of phosphate rock by strong ____________ acid produces phosphoric acid ?

Sulphuric Hydrochloric Either A. or B. Neither A. nor B.
Answer Explanation

MCQs 12: Raw materials required for the production of CAN (Calcium ammonium nitrate) is NH3__________________?

HNO3 & limestone CO2 & H2SO4 HNO3 & NH4Cl CO2 & KNO3
Answer Explanation

MCQs 13: A nitrogenous fertiliser contains 20% N2. It could be_________________?

Ammonium nitrate Calcium ammonium nitrate (CAN) Urea Ammonium chloride
Answer Explanation

MCQs 14: Which of the following is the costliest source of hydrogen needed for ammonia manufacture under Indian condition _______________?

Electrolysis of water Cryogenic removal of H2 from coke oven gas Steam reforming of naphtha Natural gas cracking
Answer Explanation

MCQs 15: Chemical formula of meta-phosphoric acid is ___________________?

H3PO4 H4P2O7 HPO3 Same as that of Pyrophosphoric acid
Answer Explanation

MCQs 16: Gas based fertiliser plants use_________________?

Natural gas as a source of hydrogen Natural gas as heating medium Coal gas as a source of hydrogen Coal gas as heating medium
Answer Explanation

MCQs 17: Main constituent of phosphate rock is_____________________?

Ammonium phosphate Flour apatite Calcium fluoride Calcium phosphate
Answer Explanation

MCQs 18: Low grade coal is ______________ to produce ammonia synthesis gas?

Hydrogenated Liquefied Gasified Dehydrogenated
Answer Explanation

MCQs 19: Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is___________________?

Exothermic Endothermic Autocatalytic None of these
Answer Explanation

MCQs 20: Catalyst used in steam reforming of naphtha is ___________________?

Bauxite Cobalt Nickel oxide on alumina support Chromium
Answer Explanation

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