Category: Fertilizer Technology

A. 3-4
B. 8-10
C. 15-17
D. 20-25

A. Ammonia
B. Urea
C. Superphosphate
D. Triple superphosphate

A. Nitrogenous
B. Phosphatic
C. Complex
D. Mixed

A. ‘Green acid’ is the other name of phosphoric acid produced by the reaction of phosphate rock
& sulphuric acid
B. Chemically unreactive nature of red phosphorous is due to its polymeric structure
C. Red phosphorous is the most reactive allotropic form of phosphorous
D. Red phosphorous, which is used in the manufacture of safety matches, is converted into white
phosphorous by vaporisation followed by condensation

A. Nitrophosphate
B. Calcium ammonium nitrate (CAN)
C. Ammonium phosphate
D. None of these

A. Dehydration of ammonium carbamate to produce urea is endothermic
B. Direct use of liquid ammonia as a fertiliser for a tropical country like India is suitable
C. Gypsum (CaSO4. 2H2O) is obtained as a by-product in the wet process for manufacture of
ortho-phosphoric acid
D. Phosphate rock when reacted with dilute H2SO4 produces superphosphate

A. Phosphoric acid
B. Superphosphate
C. Triple superphosphate
D. Gypsum

A. Having about 40% N2
B. Not hygroscopic
C. Not prone to explosive thermal decomposition
D. Mixed with limestone powder to reduce its explosive nature before using it as a fertilizer

A. Use coal for heating purpose
B. Gasify coal to get hydrogen from coal gas
C. Use coal as filler in fertiliser
D. Use coal as conditioner in fertiliser

A. Ammoniacal liquor
B. K2CO3 solution
C. Dilute H2SO4
D. Dilute HCl