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Chemical Engineering - Fertiliser Technology

Exercise

"No one is as deaf as the man who will not listen."
- (Proverb)
1. 

Phosphorus vapour comprises of
A. PB. P2
C. P3D. P4
2. 

Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
A. 50-80B. 250-400
C. 1000-1200D. 800-900
3. 

Commercial fertilisers are available mostly in the form of
A. powderB. grannules
C. lumpsD. flakes
4. 

Pick out the wrong statement.
A. All the nitrogenous fertilisers are not soluble in water.
B. A straight fertiliser contains only one nutrient.
C. Calcium cynamide is used as weed killer in onion fields.
D. The phosphorous nutrient makes the plant stem stronger and increases its branches.
5. 

Ammonia synthesis gas is produced from natural gas by
A. thermal cracking
B. steam reforming
C. partial oxidation
D. hydrogenation

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