Fertiliser Technology
Raw materials for nitric acid manufacture are

Anhydrous ammonia and air
Anhydrous ammonia, air and water
Hydrogen peroxide, air and water
Wet ammonia, air and water

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Fertiliser Technology
Phosphatic fertilisers

Lessen the effect of excessive nitrogen application
Are useful during early stage of the plant growth
None of these
Accelerate fruit formation in later stages of growth

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