Urea
CAN
Ammonium sulphate
Calcium cyanamide
✅ The correct answer is option D.
Chemical Engineering MCQs
H₄P₂O₇ is the chemical formula of __________ phosphoric acid.
Pyro
Ortho
Meta
None of these
✅ The correct answer is option A.
Which is the best fertiliser for paddy?
Ammonium sulphate
Nitro-phosphate
Superphosphate
Potassium nitrate
✅ The correct answer is option A.
Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
Carbonate
Phosphate
Bicarbonate
Silicate
✅ The correct answer is option A.
Effectiveness of a fertiliser is independent of the
Nature of soil
Type of crop
PH of soil
None of these
✅ The correct answer is option D.
Reaction of orthophosphoric acid with phosphate rock produces
Superphosphate
Triple superphosphate
Metaphosphoric acid
Monoammonium phosphate
✅ The correct answer is option B.
H₃PO₄ is the chemical formula of __________ phosphoric acid.
Pyro
Ortho
Meta
None of these
✅ The correct answer is option B.
Base suspension fertiliser essentially contains
13% N₂ and 43% P₂O₅
43% N₂ and 13% P₂O₅
43% N₂ and 13% K₂O
43% K₂O and 43% P₂O₅
✅ The correct answer is option A.
Reaction of phosphate rock with 98% H₂SO₄ produces
Orthophosphoric acid
Superphosphate
White phosphorous
None of these
✅ The correct answer is option A.
An increase in the NH₃/CO₂ ratio in urea manufacture results in
Increased degree of conversion of CO₂ to urea
Decreased degree of conversion of NH₃ to urea
Decreased yield of urea
Decreased specific volume of molten mass
✅ The correct answer is option A.