Fertiliser Technology

Question: Dehydration of ammonium carbamate produces
[A].

urea

[B].

biuret

[C].

ammonia water

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: 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

Answer: Option C

Explanation:

No answer description available for this question.

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

complex

[B].

mixed

[C].

nitrogenous

[D].

phosphatic

Answer: Option B

Explanation:

No answer description available for this question.

Question: Base suspension fertiliser essentially contains
[A].

13% N2 and 43% P2O5

[B].

43% N2 and 13% P2O5

[C].

43% N2 and 13% K2O

[D].

43% K2O and 43% P2O5

Answer: Option A

Explanation:

No answer description available for this question.

Question: Effectiveness of a fertiliser is independent of the
[A].

nature of soil

[B].

type of crop

[C].

pH of soil

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: Iron is not used alone as a catalyst in ammonia synthesis, because
[A].

its activity declines rapidly, if heated to above 520°C.

[B].

it decomposes ammonia.

[C].

it gets oxidised above 500°C.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Gas based fertiliser plants use
[A].

natural gas as a source of hydrogen.

[B].

natural gas as heating medium.

[C].

coal gas as a source of hydrogen.

[D].

coal gas as heating medium.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Neutralisation of nitric acid with ammonia to produce ammonium nitrate is a/an __________ reaction.
[A].

catalytic

[B].

endothermic

[C].

exothermic

[D].

autocatalytic

Answer: Option C

Explanation:

No answer description available for this question.

Question: In calcium ammonium nitrate (CAN) fertil-ser
[A].

nitrate nitrogen is quick acting

[B].

ammoniacal nitrogen is quick acting

[C].

nitrate nitrogen is slower acting

[D].

none of these

Answer: Option A

Explanation:

No answer description available for this question.

Question: Dehydration of ammonium carbamate to yield urea is a/an __________ reaction.
[A].

exothermic

[B].

endothermic

[C].

autocatalytic

[D].

catalytic

Answer: Option B

Explanation:

No answer description available for this question.