Fertiliser Technology problems
- 1. Reaction of orthophosphoric acid with soda ash produces
Options- A. sodium tripolyphosphate (STPP)
- B. tricresyl phosphate
- C. tributyl phosphate
- D. nitrophosphate Discuss
Correct Answer: sodium tripolyphosphate (STPP)
- 2. Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
Options- A. carbonate
- B. phosphate
- C. bicarbonate
- D. silicate Discuss
Correct Answer: carbonate
- 3. Base suspension fertiliser essentially contains
Options- A. 13% N2 and 43% P2O5
- B. 43% N2 and 13% P2O5
- C. 43% N2 and 13% K2O
- D. 43% K2O and 43% P2O5 Discuss
Correct Answer: 13% N2 and 43% P2O5
- 4. H3PO4 is the chemical formula of __________ phosphoric acid.
Options- A. pyro
- B. ortho
- C. meta
- D. none of these Discuss
Correct Answer: ortho
- 5. Action of phosphoric acid on rock phosphate produces
Options- A. superphosphate
- B. triple superphosphate
- C. nitrophosphate
- D. diammonium phosphate Discuss
Correct Answer: triple superphosphate
- 6. Red phosphorous is changed into white phosphorous by
Options- A. heating in presence of light.
- B. melting under pressure.
- C. vaporisation followed by condensation.
- D. none of these. Discuss
Correct Answer: vaporisation followed by condensation.
- 7. Hydrogen content of coke oven gas is __________ percent.
Options- A. 4
- B. 22
- C. 58
- D. 84 Discuss
Correct Answer: 58
- 8. Two gas based fertiliser plants are located in
Options- A. Maharashtra and Gujarat
- B. Maharashtra and Orissa
- C. Gujarat and Madhya Pradesh
- D. Jharkhand and Chattisgarh Discuss
Correct Answer: Maharashtra and Gujarat
- 9. Lower temperature and large excess of ammonia in urea melt
Options- A. increases biuret formation
- B. decreases biuret formation
- C. is undersirable
- D. does not effect biuret formation Discuss
Correct Answer: decreases biuret formation
- 10. Urea is a __________ fertiliser.
Options- A. nitrogenous
- B. potassic
- C. phosphatic
- D. none of these Discuss
Correct Answer: nitrogenous
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