Fertiliser Technology MCQ Questions & Answers

1

5-10-5 fertilisers mean that they contain

A) 5, 10, 5% respectively of N₂, P₂O₅ and K₂O B) Only 5 to 10% active fertiliser constituents C) 5 to 10% filler & carrier of soil conditioners D) None of these

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Answer & Solution

Answer: Option A

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2

Maximum nitrogen percentage is in

A) Ammonium sulphate B) Calcium ammonium nitrate C) Urea D) Liquid ammonia

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Answer & Solution

Answer: Option D

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3

Use of catalyst is a must in the ammonia manufacture, because the reaction is reversible as well as the heat of dissociation of N₂ & H₂ is high. The presence of promoter along with the catalyst helps in __________ of the catalyst.

A) Stabilisation B) Increasing the effectiveness C) Improving the strength & heat resistance D) All of the above

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Answer & Solution

Answer: Option D

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4

Low grade phosphate rock can be used in electrical furnace, because

A) Of the better CaO/SiO₂ balance for slag formation B) CaO content is less C) It is cheap D) It produces low cost product

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Answer & Solution

Answer: Option A

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5

Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the

A) Presence of an inert atmosphere B) Presence of a reducing atmosphere C) Absence of air D) Presence of an oxidising atmosphere

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Answer & Solution

Answer: Option C

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6

Catalyst used in the oxidation of ammonia is

A) Platinum-beryllium B) Platinum-rhodium C) Cobalt-molybdenum D) Platinum-molybdenum

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Answer & Solution

Answer: Option B

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7

An increase in the NH₃/CO₂ ratio in urea manufacture results in

A) Increased degree of conversion of CO₂ to urea B) Decreased degree of conversion of NH₃ to urea C) Decreased yield of urea D) Decreased specific volume of molten mass

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Answer & Solution

Answer: Option A

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8

Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of

A) Phosphoric acid B) Superphosphate C) Phosphorous D) Triple superphosphate

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Answer & Solution

Answer: Option C

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9

Steam reforming of naphtha produces ammonia synthesis gas. This is a/an __________ process.

A) Autocatalytic B) Endothermic C) Exothermic D) Non-catalytic

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Answer & Solution

Answer: Option B

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10

Monte catini process is used for the manufacture of

A) Nitric acid B) Phosphoric acid C) Urea D) Calcium ammonium nitrate (CAN)

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Answer & Solution

Answer: Option C

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Fertiliser Technology MCQ Questions & Answers | Chemical Engineering