The most reactive allotropic form of phosphorus is
A.red phosphorus
B.yellw phosphorus
C.black phosphorus
D.violet phosphorus
Category: Fertilizer Technology Mcqs
Tributyl phosphate is used
A.in extraction of uranium plutonium and thorium nitrates
B.as fertilizer
C.as plasticizer
D.as an additive and antiknock supplement compound for petrol
The chemical formula of gypsum is
A.CaSO4
B.CaSO4.H2O
C.CaSO4.2H2O
D.CaSO4.
Triple superphosphate contains
A.16-20% P2O5
B.42-45% P2O5
C.70-75% P2O5
D.90-92% P2O5
The nitrogenous fertilizer with highest percentage of nitrogen is
A.urea
B.ammonium sulphate
C.ammonium nitrate
D.calcium nitrate
Raw materials for the manufacture of nitric acid are
A.anhydrous ammonia and air
B.air and water
C.air and steam
D.anhydrous ammonia and water
Tricresyl phosphate is used
A.as an additive and antiknock supplement compound for petrol
B.in extraction of uranium plutonium and thorium nitrates
C.in nuclear reactor fuel reprocessing
D.as fertilizer
Synthetic ammonia is produced by reacting nitrogen and hydrogen gases. The reaction is
A.endothermic
B.exothermic
C.irreversible
D.catalyzed by enzymes
Red phosphorus may be changed to white phosphorus by
A.vapourization followed by condensation
B.heating in the presence of light
C.heating under high pressure
D.melting under pressure
NPK fertilizer is a
A.nitrogenous fertilizer
B.phosphatic fertilizer
C.potassic fertilizer
D.mixed fertilizer
