P2O5 content in superphosphate is about _____________ percent?
P2O5 content in superphosphate is about _____________ percent?
A. 30-35
B. 15-20
C. 65-70
D. 85-90
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Biuret formation in urea is kept at minimum (< 1 %), because it is___________________?
Biuret formation in urea is kept at minimum (< 1 %), because it is___________________?A. Corrosive in nature
B. Toxic and harmful to some crops
C. Helpful in decomposition of urea
D. Explosive in natureHPO3 is the chemical formula of ______________ phosphoric acid?
HPO3 is the chemical formula of ______________ phosphoric acid?A. Pyro
B. Ortho
C. Meta
D. None of theseElectric furnace method for production of phosphorous uses phosphate rock and _________________________?
Electric furnace method for production of phosphorous uses phosphate rock and _________________________?A. Phosphoric acid
B. Coke
C. Sulphuric acid
D. Silica and coke______________ is the most suitable fertiliser for paddy?
______________ is the most suitable fertiliser for paddy?A. Urea
B. Ammonium sulphate
C. Superphosphate
D. Potassium nitrateIn calcium ammonium nitrate (CAN) fertiliser ____________________?
In calcium ammonium nitrate (CAN) fertiliser ____________________?A. Nitrate nitrogen is quick acting
B. Ammoniacal nitrogen is quick acting
C. Nitrate nitrogen is slower acting
D. None of theseRed phosphorous is changed into white phosphorous by______________________?
Red phosphorous is changed into white phosphorous by______________________?A. Heating in presence of light
B. Melting under pressure
C. Vaporisation followed by condensation
D. None of these