Fertiliser Technology
Raw materials for nitric acid manufacture are

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

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Fertiliser Technology
The composition of fresh feed to the high temperature, high pressure urea autoclave is

Liquid ammonia and excess compressed CO₂
Compressed ammonia gas and excess compressed CO₂
Excess liquid ammonia and compressed CO₂ gas
Excess liquid ammonia and liquefied CO₂

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Fertiliser Technology
Nitrogenous fertiliser is required

During the early stage of growth to promote development of stem and leaves
To lessen the effect of excessive potash application
None of these
For accelerating fruit formation in later stage of growth

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