61. Which of the following fertilisers is used as a cattle feed?
Urea
Calcium ammonium nitrate
Superphosphate
Ammonium sulphate
✅ The correct answer is option A.
Fertilizer Technology MCQs
62. 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.
63. (CH₃ C₆ H₄)₃ PO₄ is the chemical formula of
Triple superphosphate
Tricresyl phosphate
Flourapatite
Superphosphate
✅ The correct answer is option B.
64. Main constituent of phosphate rock is
Ammonium phosphate
Flour apatite
Calcium fluoride
Calcium phosphate
✅ The correct answer is option B.
65. 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.
66. The fertiliser plant getting hydrogen by electrolysis of water is situated at
Namrup
Nangal
Rourkela
Korba
✅ The correct answer is option B.
67. Flushing liquor used for cooling coke oven gas constitutes of
Ammoniacal liquor
K₂CO₃ solution
Dilute H₂SO₄
Dilute HCl
✅ The correct answer is option A.
68. Which of the following does not come under the category of’primary nutrient’ for plant growth?
Potassium
Nitrogen
Phosphorous
Sulphur
✅ The correct answer is option D.
69. Temperature and pressure in ammonia converter is
200 atm, 1000°C
450 atm, 200°C
450 atm, 550°C
450 atm, 1000°C
✅ The correct answer is option C.
70. Reaction of orthophosphoric acid with soda ash produces
Sodium tripolyphosphate (STPP)
Tricresyl phosphate
Tributyl phosphate
Nitrophosphate
✅ The correct answer is option A.