Author name: admin

Question: Ammonium sulphate fertiliser is
[A].

the highest concentration nitrogenous fertiliser.

[B].

the best fertiliser for paddy.

[C].

a basic fertiliser.

[D].

a neutral fertiliser.

Answer: Option B

Explanation:

No answer description available for this question.

Question: __________ is required more for leafy crops.
[A].

Nitrogen

[B].

Phosphorous

[C].

Potassium

[D].

Carbon

Answer: Option A

Explanation:

No answer description available for this question.

Question: In the manufacture of orthophosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable
[A].

CaSO4 .H2O and CaSO4 crystals

[B].

pyrophosphoric acid

[C].

metaphosphoric acid

[D].

all (a), (b) and (c).

Answer: Option A

Explanation:

No answer description available for this question.

Question: In the manufacture of H3 PO4 (ortho), ; strong H2 SO4 leaching wet process as compared to electric furnace process
[A].

uses lower grade phosphate rock.

[B].

requires lower capital investment in the plant.

[C].

produces lower purity acid.

[D].

is very costly.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?
[A].

Iso propyl alcohol

[B].

Butyl alcohol

[C].

Toluene

[D].

Hexane

Answer: Option B

Explanation:

No answer description available for this question.

Question: (CH3 C6 H4)3 PO4 is the chemical formula of
[A].

triple superphosphate

[B].

tricresyl phosphate

[C].

flourapatite

[D].

superphosphate

Answer: Option B

Explanation:

No answer description available for this question.

Question: Chemical formula of metaphosphoric acid is
[A].

H3PO4

[B].

H4P2O7

[C].

HPO3

[D].

same as that of pyrophosphoric acid

Answer: Option C

Explanation:

No answer description available for this question.

Question: Chemical formula of biuret is
[A].

NH2.CO.NH2

[B].

NH3.COO.NH3

[C].

NH2CONHCONH2

[D].

NH4COONH2

Answer: Option C

Explanation:

No answer description available for this question.

Question: Nitrolime is chemically known as
[A].

calcium nitrate

[B].

ammonium nitrate

[C].

calcium ammonium nitrate (CAN)

[D].

none of these

Answer: Option C

Explanation:

No answer description available for this question.