Category: Fertilizer Technology

A. Superphosphate
B. Triple superphosphate
C. Calcium phosphate
D. Meta phosphoric acid

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

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

A. Are useful during early stage of the plant growth
B. Stimulate early growth and accelerate seeding
C. Help in development of starches of potatoes and grain
D. None of these

A. Superphosphate
B. Triple superphosphate
C. Meta-phosphoric acid
D. Monoammonium phosphate

A. Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported
under water
B. Apatite is the principal material present in phosphate rock which is chemically Ca10 (PO4)6 (F,
Cl, OH)
C. Urea is more hygroscopic than ammonium nitrate
D. Nitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e.
into nitrogen compound form

A. Uses lower grade phosphate rock
B. Requires lower capital investment in the plant
C. Produces lower purity acid
D. Is very costly

A. Nickel
B. Platinum
C. Silica gel
D. Rhodium

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

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