91. Raw materials for urea production are
CO₂ and N₂
CO₂, H₂ and N₂
NH₃ and CO
HNO₃ and CaCO₃
✅ The correct answer is option B.
Fertilizer Technology MCQs
92. Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.
250-300
500-750
950-1050
1400-1450
✅ The correct answer is option D.
93. In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.
Fauser-Monte Catini
Claude
Udhe
Kellog
✅ The correct answer is option B.
95. Hydrogen is recovered from coke oven gas on commercial scale (as practised in fertiliser plant at Rourkela) by
Adsorption on palladium
Cryogenic operations (low temperature cooling)
Absorption (using ethanolamine or pyragalloll solution)
None of these
✅ The correct answer is option B.
96. CO₂ present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in
Mono-ethanolamine (MEA)
Slaked lime
Ammoniacal liquor
Methyl-Ethyl Ketone (MEK)
✅ The correct answer is option A.
97. Fertiliser produced during soda ash manufacture by dual process is ammonium
Chloride
Sulphate
Nitrate
None of these
✅ The correct answer is option A.
98. Commercial fertilisers are available mostly in the form of
Powder
Grannules
Lumps
Flakes
✅ The correct answer is option B.
99. NPK fertiliser is a __________ fertiliser.
Complex
Mixed
Nitrogenous
Phosphatic
✅ The correct answer is option B.