3625. Which is the most suitable fertiliser for paddy?
CAN
Ammonium sulphate
Ammonium nitrate
Superphosphate
✅ The correct answer is option B.
3630. Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber’s process?
High pressure, low reactants concentration, high temperature
High pressure, low reactants concentration, low temperature
High pressure, high reactants concentration, low temperature
Low pressure, high reactants concentration, low temperature
✅ The correct answer is option C.
3595. __________ is the most suitable fertiliser for paddy.
Urea
Ammonium sulphate
Superphosphate
Potassium nitrate
✅ The correct answer is option B.
3601. NPK means a __________ fertiliser.
Mixed
Potassic
Liquid
Solid
✅ The correct answer is option A.
3606. In natural gas, the C/H ratio (by weight) varies in the range of
3-Apr
8-Oct
15-17
20-25
✅ The correct answer is option A.
3612. Monte catini process is used for the manufacture of
Nitric acid
Phosphoric acid
Urea
Calcium ammonium nitrate (CAN)
✅ The correct answer is option C.
3617. Vetrocoke solution is
A mixture of K₂CO₃ and As₂O₃
K₂SO₄
A mixture of Na₂CO₃ and As₂O₃
Na₂SO₄
✅ The correct answer is option A.
3622. Catalyst used in the manufacture of NH₃ by Haber’s process is finely divided
Nickel
Iron
Vanadium pentoxide
Alumina
✅ The correct answer is option B.
3627. Heating of orthophosphoric acid to 250°C produces
Metaphosphoric acid
Pyrophosphoric acid
No change in it
None of these
✅ The correct answer is option B.
3632. A fertiliser plant is classified as a gas based fertiliser plant, when it uses __________ gas as a source of hydrogen for the manufacture of ammonia.
Coke oven
Producer
Natural
Coal
✅ The correct answer is option C.