Fertiliser Technology

Question: Nitrogen content of calcium ammonium nitrate (CAN) is __________ percent.
[A].

10

[B].

25

[C].

50

[D].

80

Answer: Option B

Explanation:

No answer description available for this question.

Question: Nitrogen content of urea is about __________ percent.
[A].

10

[B].

46

[C].

80

[D].

94

Answer: Option B

Explanation:

No answer description available for this question.

Question: 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.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Conditioners like finely divided peat are added to the fertiliser to
[A].

counteract burning.

[B].

avoid caking & hardening.

[C].

produce bulk.

[D].

increase its solubility.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Nitrogenous fertiliser is required
[A].

during the early stage of growth to promote development of stem and leaves.

[B].

for accelerating fruit formation in later stage of growth.

[C].

to lessen the effect of excessive potash application.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Catalyst used in the oxidation of ammonia is
[A].

platinum-beryllium

[B].

platinum-rhodium

[C].

cobalt-molybdenum

[D].

platinum-molybdenum

Answer: Option B

Explanation:

No answer description available for this question.

Question: Catalyst used in Haber’s process for ammonia production is
[A].

reduced iron oxide

[B].

nickel

[C].

vanadium pentoxide

[D].

silica gel

Answer: Option A

Explanation:

No answer description available for this question.

Question: NPK means a __________ fertiliser.
[A].

mixed

[B].

potassic

[C].

liquid

[D].

solid

Answer: Option A

Explanation:

No answer description available for this question.

Question: Electric furnace method for production of phosphorous uses phosphate rock
[A].

and phosphoric acid

[B].

and coke

[C].

and sulphuric acid

[D].

silica and coke

Answer: Option D

Explanation:

No answer description available for this question.

Question: 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.

Answer: Option A

Explanation:

No answer description available for this question.