Fertiliser value of a nitrogenous fertiliser is expressed in terms of its ______________ content?

A. Ortho-phosphoric acid
B. Simple superphosphate
C. Triple superphosphate
D. Red phosphorous

A. It is cheaper
B. Nitrogen content is higher
C. It is not poisonous
D. It is easy to manufacture

A. Nitrogen
B. Phosphorous
C. Potassium
D. Calcium

A. Coke oven
B. Producer
C. Natural
D. Coal

A. 4
B. 22
C. 58
D. 84

A. Catalytic
B. Exothermic
C. Endothermic
D. Reversible