Fertiliser Technology
Which of the following nitrogenous fertilisers has the highest percentage of nitrogen?

Calcium ammonium nitrate (CAN)
Ammonium sulphate
Calcium nitrate
Urea

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Fertiliser Technology
Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber's process?

High pressure, low reactants concentration, low temperature
High pressure, low reactants concentration, high temperature
High pressure, high reactants concentration, low temperature
Low pressure, high reactants concentration, low temperature

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