Chemical Engineering - Fertiliser Technology

6. 

Oxidation of ammonia is

A. exothermic
B. endothermic
C. non-catalytic
D. autocatalytic

Answer: Option A

Explanation:

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7. 

Reaction of orthophosphoric acid with phosphate rock produces

A. superphosphate
B. triple superphosphate
C. metaphosphoric acid
D. monoammonium phosphate

Answer: Option B

Explanation:

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8. 

Flushing liquor used for cooling coke oven gas constitutes of

A. ammoniacal liquor
B. K2CO3 solution
C. dilute H2SO4
D. dilute HCl

Answer: Option A

Explanation:

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9. 

Temperature and pressure in ammonia converter is

A. 200 atm, 1000°C
B. 450 atm, 200°C
C. 450 atm, 550°C
D. 450 atm, 1000°C

Answer: Option C

Explanation:

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10. 

pH value of soil is maintained at __________ by the addition of fertiliser for optimum growth and health of the plant.

A. 4-5
B. 7-8
C. 9-10
D. 12-13

Answer: Option B

Explanation:

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