Fertilizer Technology

Catalytic ammonia synthesis reaction as in Haber’s process is_________________? A. EndothermicB. Exothermic C. Irreversible D. None of these

H4P2O7 is the chemical formula of _____________ phosphoric acid? A. Pyro B. Ortho C. Meta D. None of these

-10-5 fertilisers mean that they contain______________? A. 5, 10, 5% respectively of N2, P2O5 and K2O B. Only 5 to 10% active fertiliser constituents C. 5 to 10% filler & carrier of soil conditioners D. None of these

Reaction of anhydrous liquid ammonia with ortho-phosphoric acid produces____________________? A. Ammonium phosphate B. Superphosphate C. Triple superphosphate D. None of these

In ammonia synthesis (N2 + 3H2 = 2NH3), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at________________? A. Low pressureB. High pressure C. Very high temperature D. Atmospheric pressure; as the pressure has no effect on conversion

Nitric acid is produced on commercial scale in a fertiliser plant by___________________? A. Oxidation of ammonia B. CaNO3 + H2SO4 reaction C. Passing air through high voltage electric arc D. None of these

With increases in pressure, the conversion of Ammonium carbamate into urea___________________? A. Increases B. Decreases C. Remains unaltered D. Can either increase or decrease depends on biuret content

Nitrogen content of urea is about _____________ percent ? A. 10B. 46 C. 80 D. 94

Plant tranquillisers___________________? A. Hold back stem growth and halt plants at a desired height B. Cause early maturation of plants C. Accelerate ripening of food and grain D. Produce seedless fruit

Raw materials for nitric acid manufacture are___________________? A. Hydrogen peroxide, air and water B. Anhydrous ammonia and airC. Anhydrous ammonia, air and water D. Wet ammonia, air and water