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MCQs 1: Catalyst used in steam reforming of naphtha is__________________?

Nickel Platinum Silica gel Rhodium
Answer Explanation

MCQs 2: Color of nitric acid is light yellow due to the presence of__________________?

NO NO2 N2H5 NH3
Answer Explanation

MCQs 3: Which of the following is not a commercially used feed-stock for the production of ammonia synthesis gas ?

Water Naphtha Tar Coal/coke oven gas
Answer Explanation

MCQs 4: Conditioners like finely divided peat are added to the fertiliser to________________?

Counteract burning Avoid caking & hardening Produce bulk Increase its solubility
Answer Explanation

MCQs 5: Urea is a better fertilizer than ammonium sulphate, because__________________?

It is cheaper Nitrogen content is higher It is not poisonous It is easy to manufacture
Answer Explanation

MCQs 6: Electric furnace method for production of phosphorous uses phosphate rock and _________________________?

Phosphoric acid Coke Sulphuric acid Silica and coke
Answer Explanation

MCQs 7: An increase in the NH3/CO2 ratio in urea manufacture results in__________________?

Increased degree of conversion of CO2 to urea Decreased degree of conversion of NH3 to urea Decreased yield of urea Decreased specific volume of molten mass
Answer Explanation

MCQs 8: Maximum nitrogen percentage is in________________?

Ammonium sulphate Calcium ammonium nitrate Urea Liquid ammonia
Answer Explanation

MCQs 9: Fertiliser plants get their N2 requirements _____________________?

By fractionation of liquefied air By dissociating oxides of nitrogen From coal gas (coke oven gas) From producer gas
Answer Explanation

MCQs 10: Which of the following is not a measure component necessarily to be present in fertilisers ?

Nitrogen Potassium Phosphorous Sulphur
Answer Explanation

MCQs 11: Yield of urea can be increased with excess ammonia and higher pressure & temperature, but because of ____________ this is normally not done?

Increased biuret formation High corrosion rate Increased cost of equipment All A., B. & C.
Answer Explanation

MCQs 12: The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about ____________ percent?

60 30 95 100
Answer Explanation

MCQs 13: Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of_________________?

Phosphoric acid Superphosphate Phosphorous Triple superphosphate
Answer Explanation

MCQs 14: Lower temperature and large excess of ammonia in urea melt__________________?

Increases biuret formation Decreases biuret formation Is undesirable Does not effect biuret formation
Answer Explanation

MCQs 15: Bio-fertilisers are cheaper, renewable and pollution free. They improve the _____________ of the soil?

Nutrient supply Texture Water holding capacity All A., B. and C.
Answer Explanation

MCQs 16: Montecatini process is used for the manufacture of____________________?

Nitric acid Phosphoric acid Urea Calcium ammonium nitrate (CAN)
Answer Explanation

MCQs 17: Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium___________________?

Carbonate Phosphate Bicarbonate Silicate
Answer Explanation

MCQs 18: Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis ?

H2 separation from coke oven gas Steam reforming of naphtha Cracking of natural gas Electrolysis of water
Answer Explanation

MCQs 19: Urea is formed only____________________?

In liquid phase In vapour phase At very high temperature At very low pressure (vacuum)
Answer Explanation

MCQs 20: A mixture of phosphate rock ______________ is heated in an electric furnace to produce phosphorous?

Salt & coke Sand & coke And coke And sand
Answer Explanation

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