Fertiliser Technology MCQs with answers Page - 1

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Q. Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because

(A) It is hygroscopic and explosive in nature
(B) It is highly acidic in nature
(C) It is a liquid at room temperature
(D) Its nitrogen content is very less

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Q. Ammonium sulphate can be produced by reacting gypsum with

(A) Ammonia
(B) Ammonium carbonate
(C) Nitric acid
(D) None of these

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Q. Calcium ammonium nitrate (CAN) is

(A) A mixed fertiliser
(B) A straight fertiliser
(C) A complex fertiliser
(D) Not a fertiliser; it is an explosive

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Q. The main constituent of rock phosphate is

(A) Mono-calcium phosphate
(B) Di-calcium phosphate
(C) Fluorspar
(D) None of these

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Q. Potassic fertilisers do not promote the development of

(A) Stems & leaves during early stage of plant growth
(B) Starches of potatoes & grains
(C) Sugar of fruits & vegetables
(D) Fibrous materials of plants

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Q. 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 granular 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 byproduct coke ovens

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Q. Out of the following, N4 content is minimum in

(A) Urea
(B) Ammonium nitrate
(C) Ammonium sulphate
(D) Ammonium chloride

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Q. NPK means a _________ fertiliser.

(A) Mixed
(B) Potassic
(C) Liquid
(D) Solid

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Q. Heating of ortho-phosphoric acid to 250°C produces

(A) Meta-phosphoric acid
(B) Pyrophosphoric acid
(C) No change in it
(D) None of these

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Q. Chemical formula of biuret is

(A) NH₂.CO.NH₄
(B) NH₃.COO.NH₃
(C) NH₂CONHCONH₂
(D) NH₄COONH₂

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