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MCQs 1: Raw materials for nitric acid manufacture are___________________?

Hydrogen peroxide, air and water Anhydrous ammonia and air Anhydrous ammonia, air and water Wet ammonia, air and water
Answer Explanation

MCQs 2: Plant tranquillisers___________________?

Hold back stem growth and halt plants at a desired height Cause early maturation of plants Accelerate ripening of food and grain Produce seedless fruit
Answer Explanation

MCQs 3: Nitrogen content of a nitrogenous fertiliser is 35%. It could be___________________?

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

MCQs 4: Nitrogen content of urea is about _____________ percent ?

10 46 80 94
Answer Explanation

MCQs 5: With increases in pressure, the conversion of Ammonium carbamate into urea___________________?

Increases Decreases Remains unaltered Can either increase or decrease depends on biuret content
Answer Explanation

MCQs 6: Nitric acid is produced on commercial scale in a fertiliser plant by___________________?

Oxidation of ammonia CaNO3 + H2SO4 reaction Passing air through high voltage electric arc None of these
Answer Explanation

MCQs 7: In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at________________?

Low pressure High pressure Very high temperature Atmospheric pressure; as the pressure has no effect on conversion
Answer Explanation

MCQs 8: Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces____________________?

Ammonium phosphate Superphosphate Triple superphosphate None of these
Answer Explanation

MCQs 9: -10-5 fertilisers mean that they contain______________?

5, 10, 5% respectively of N2, P2O5 and K2O Only 5 to 10% active fertiliser constituents 5 to 10% filler & carrier of soil conditioners None of these
Answer Explanation

MCQs 10: H4P2O7 is the chemical formula of _____________ phosphoric acid?

Pyro Ortho Meta None of these
Answer Explanation

MCQs 11: Catalytic ammonia synthesis reaction as in Haber’s process is_________________?

Endothermic Exothermic Irreversible None of these
Answer Explanation

MCQs 12: Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?

Urea CAN Ammonium sulphate Calcium cyanamide
Answer Explanation

MCQs 13: The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is _____________ fertiliser?

Nitrogenous Phosphatic Potassic None of these
Answer Explanation

MCQs 14: Triple superphosphate is made by reacting phosphate rock with _____________ acid?

Phosphoric Nitric Sulphuric Hydrochloric
Answer Explanation

MCQs 15: ____________ catalyst is used in the production of urea from CO2 and NH3?

Vanadium pentoxide No Alumina Nickel
Answer Explanation

MCQs 16: Ammonium nitrate is___________________?

Having about 40% N2 Not hygroscopic Not prone to explosive thermal decomposition Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer
Answer Explanation

MCQs 17: Tricresyl phosphate is chemically represented as___________________?

(CH3 C6 H4)3 PO4 Ca10(PO4)3F6 (NH4)2HPO4 NH4H2PO4
Answer Explanation

MCQs 18: Nitrolime is___________________?

Calcium nitrate Calcium ammonium nitrate A mixture of nitric acid and lime A mixture of ammonium nitrate and calcium nitrate
Answer Explanation

MCQs 19: Multistage operation (as in the case of catalytic oxidation of SO2) is not carried out for NH3 synthesis, because of____________________?

Comparatively higher pressure drop High cost of the high pressure vessel used for the reactor Higher pumping cost Chances of entrainment and disturbance of catalyst bed
Answer Explanation

MCQs 20: Steam reforming of naphtha produces ammonia synthesis gas. This is a/an ____________ process?

Autocatalytic Endothermic Exothermic Non-catalytic
Answer Explanation

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