Chemical Engineering - Fertiliser Technology

1. 

Which one of the following is used as a nitrogenous fertiliser, as a weed killer in the onion fields and for correcting acidic soils ?

A. Urea
B. CAN
C. Ammonium sulphate
D. Calcium cyanamide

Answer: Option D

Explanation:

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2. 

__________ catalyst is used in the production of urea from CO2 and NH3.

A. Vanadium pentoxide
B. No
C. Alumina
D. Nickel

Answer: Option B

Explanation:

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3. 

5-10-5 fertilisers mean that they contain

A. 5, 10, 5% respectively of N2, P2O5 and K2O.
B. only 5 to 10% active fertiliser constituents.
C. 5 to 10% filler & carrier of soil conditioners.
D. none of these.

Answer: Option A

Explanation:

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4. 

Color of nitric acid is light yellow due to the presence of

A. NO
B. NO2
C. N2H5
D. NH3

Answer: Option B

Explanation:

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5. 

Catalytic ammonia synthesis reaction as in Haber's process is

A. endothermic
B. exothermic
C. irreversible
D. none of these

Answer: Option B

Explanation:

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