Fertiliser Technology problems
- 1. P2O5 content in triple superphosphate is about __________ percent.
Options- A. 42-50
- B. 15-20
- C. 85-90
- D. 70-75 Discuss
Correct Answer: 42-50
- 2. Which is a catalyst promoter used in catalytic ammonia synthesis reaction?
Options- A. Al2O3
- B. Cr2O3
- C. K2O
- D. MnO Discuss
Correct Answer: K2O
- 3. (CH3 C6 H4)3 PO4 is the chemical formula of
Options- A. triple superphosphate
- B. tricresyl phosphate
- C. flourapatite
- D. superphosphate Discuss
Correct Answer: tricresyl phosphate
- 4. Catalyst used in Haber's process for ammonia production is
Options- A. reduced iron oxide
- B. nickel
- C. vanadium pentoxide
- D. silica gel Discuss
Correct Answer: reduced iron oxide
- 5. Ammonium sulphate can be produced by reacting gypsum with
Options- A. ammonia
- B. ammonium carbonate
- C. nitric acid
- D. none of these Discuss
Correct Answer: ammonium carbonate
- 6. Nitrogenous fertiliser is required
Options- A. during the early stage of growth to promote development of stem and leaves.
- B. for accelerating fruit formation in later stage of growth.
- C. to lessen the effect of excessive potash application.
- D. none of these. Discuss
Correct Answer: during the early stage of growth to promote development of stem and leaves.
- 7. The concentration (weight %) of nitric acid produced by the oxidation of ammonia and absorption of nitrogen oxides with water is about __________ percent.
Options- A. 60
- B. 30
- C. 95
- D. 100 Discuss
Correct Answer: 60
- 8. Prilling tower is found in the flowsheet for the manufacture of
Options- A. ammonia
- B. urea
- C. superphosphate
- D. triple superphosphate Discuss
Correct Answer: urea
- 9. Phosphoric acid is produced in wet process from phosphate rock and
Options- A. dilute H2SO4
- B. concentrated H2SO4
- C. concentrated NHO3
- D. concentrated HCl Discuss
Correct Answer: dilute H2SO4
- 10. Urea is represented as
Options- A. NH2.CO.NH2
- B. NH3CO.CH3
- C. NH.CO2.NH
- D. NH3.CO2.NH3 Discuss
Correct Answer: NH2.CO.NH2
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