191. Dehydration of ammonium carbamate to yield urea is a/an __________ reaction.
Exothermic
Endothermic
Autocatalytic
Catalytic
✅ The correct answer is option B.
Fertilizer Technology MCQs
192. Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at
Rourkela (under SAIL)
Bokaro (under SAIL)
Sindri (under FCI)
Baroda (under G.S.F.C.)
✅ The correct answer is option C.
193. Which is a catalyst promoter used in catalytic ammonia synthesis reaction?
Al₂O₃
Cr₂O₃
K₂O
MnO
✅ The correct answer is option C.
194. Ammonia synthesis reaction is
Exothermic
Endothermic
Autocatalytic
None of these
✅ The correct answer is option A.
195. P₂O₅ content in superphosphate is about __________ percent.
30-35
15-20
65-70
85-90
✅ The correct answer is option B.
196. CaH₄(PO₄)₂ is the chemical formula of
Superphosphate
Triple superphosphate
Calcium phosphate
Meta phosphoric acid
✅ The correct answer is option B.
197. Which of the following is the costliest method for commercial production of hydrogen for ammonia synthesis?
H? separation from coke oven gas
Steam reforming of naphtha
Cracking of natural gas
Electrolysis of water
✅ The correct answer is option D.
198. Catalyst used in steam reforming of naphtha is
Bauxite
Cobalt
Nickel oxide on alumina support
Chromium
✅ The correct answer is option C.
199. Which of the following gasifiers can be attached to coal based fertiliser plants?
Lurgi (high pressure) gasifier
Kopper-Totzek gasifier
Gasifier working at 20 atm
Gasifier working at 40 atm
✅ The correct answer is option B.
200. In ammonia synthesis (N₂ + 3H₂ = 2NH₃), there is a decrease in total volume, hence to get high equilibrium conversion, the reaction should be carried out at
Low pressure
High pressure
Very high temperature
Atmospheric pressure; as the pressure has no effect on conversion
✅ The correct answer is option B.