Fertiliser Technology MCQ Questions & Answers

51

Both white phosphorous as well as red phosphorous

A) Are soluble in CS₂ B) Burns when heated in air C) Reacts with hot caustic soda solution to give phosphine D) All of the above

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Answer & Solution

Answer: Option B

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52

C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about

A) 2 B) 6 C) 13 D) 20

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Answer & Solution

Answer: Option B

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53

Prilling tower is found in the flowsheet for the manufacture of

A) Ammonia B) Urea C) Superphosphate D) Triple superphosphate

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Answer & Solution

Answer: Option B

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54

The most suitable fertiliser for accelerating seeding or fruit formation in later stages of plant growth is __________ fertiliser.

A) Nitrogenous B) Phosphatic C) Potassic D) None of these

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Answer & Solution

Answer: Option B

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55

Oxidation of ammonia is

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

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Answer & Solution

Answer: Option A

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56

Phosphatic fertilisers

A) Are useful during early stage of the plant growth B) Accelerate fruit formation in later stages of growth C) Lessen the effect of excessive nitrogen application D) None of these

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Answer & Solution

Answer: Option B

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57

Phosphorus vapour comprises of

A) P B) P₂ C) P₃ D) P₄

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Answer & Solution

Answer: Option D

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58

Pick out the wrong statement.

A) Nitrogen is normally supplied in fertiliser either in ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions or nitrate ions and forms amino acids B) Calcium present in the fertiliser helps in correcting the soil acidity C) Particle size range of a good grannular fertiliser is 10-15 mesh and it contains less moisture as compared to finely divided powder form of fertiliser D) Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens

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Answer & Solution

Answer: Option D

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59

Plant tranquillisers

A) Hold back stem growth and halt plants at a desired height B) Cause early maturation of plants C) Accelerate ripening of food and grain D) Produce seedless fruit

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Answer & Solution

Answer: Option A

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60

(CH₃C₆H₄)₃PO₄ is the chemical formula of

A) Triple superphosphate B) Tricresyl phosphate C) Flourapatite D) Superphosphate

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Answer & Solution

Answer: Option B

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Fertiliser Technology MCQ Questions & Answers | Chemical Engineering