Urea
Ammonium nitrate
Calcium ammonium nitrate (CAN)
Ammonium sulphate
✅ The correct answer is option B.
Fertilizer Technology MCQs
142. Prilling of urea should be accomplished (in a sprayer) just above the melting point of urea with minimum of retention time, otherwise it will result in
Low bulk density product
Biuret formation
Non-spherical prills
Substantially wet non-flowing and sticky product
✅ The correct answer is option B.
143. The optimum size of the ammonia plant is __________ tons/day.
10
100
1000
1000C
✅ The correct answer is option C.
144. Nitrogen content of urea is about __________ percent.
10
46
80
94
✅ The correct answer is option B.
145. Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it
Has a pungent smell
Vaporises at normal temperature
Is toxic and highly corrosive
Is in short supply
✅ The correct answer is option B.
146. Fauser Monte Catini converter is used for
Ammonia synthesis (e.g. at FCI Sindri)
Methanation of CO and CO₂
Shift conversion (i.e. CO to CO₂)
None of these
✅ The correct answer is option A.
147. Yield of elemental phosphorous from rock phosphate is about __________ percent.
1-Feb
15-25
40-45
60-65
✅ The correct answer is option B.
148. Promoter used in NH₃ synthesis catalyst is
K₂O
SiO₃
V₂O₅
U₂O₃
✅ The correct answer is option C.
149. Triple superphosphate is made by reacting phosphate rock with __________ acid.
Phosphoric
Nitric
Sulphuric
Hydrochloric
✅ The correct answer is option A.
150. A phosphatic fertiliser contains 16% P₂O₅. It could be
Dicalcium phosphate
Superphosphate
Triple superphosphate
None of these
✅ The correct answer is option B.