Chemical Engineering - Fertiliser Technology

1. 

Ammonium nitrate is

A. having about 40% N2.
B. not hygroscopic.
C. not prone to explosive thermal decomposition.
D. mixed with limestone powder to reduce its explosive nature before using it as a fertilizer.

Answer: Option D

Explanation:

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2. 

Urea is a better fertilizer than ammonium sulphate, because

A. it is cheaper.
B. nitrogen content is higher.
C. it is not poisonous.
D. it is easy to manufacture.

Answer: Option B

Explanation:

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3. 

Reaction of cresylic acid with __________ produces tricresyl phosphate.

A. phosphorous pentoxide
B. phosphorous oxychloride
C. ammonium phosphate
D. calcium phosphate

Answer: Option B

Explanation:

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4. 

In the manufacture of urea, the intermediate chemical formed is

A. biuret
B. ammonium carbamate
C. ammonium carbonate
D. none of these

Answer: Option B

Explanation:

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5. 

Nitrolime is chemically known as

A. calcium nitrate
B. ammonium nitrate
C. calcium ammonium nitrate (CAN)
D. none of these

Answer: Option C

Explanation:

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