Discussion
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- Question
Phosphoric acid is produced in wet process from phosphate rock and
Options- A. dilute H2SO4
- B. concentrated H2SO4
- C. concentrated NHO3
- D. concentrated HCl
- Correct Answer
- dilute H2SO4
- 1. Prilling tower is found in the flowsheet for the manufacture of
Options- A. ammonia
- B. urea
- C. superphosphate
- D. triple superphosphate Discuss
- 2. 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
- 3. 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
- 4. Ammonium sulphate can be produced by reacting gypsum with
Options- A. ammonia
- B. ammonium carbonate
- C. nitric acid
- D. none of these Discuss
- 5. Catalyst used in Haber's process for ammonia production is
Options- A. reduced iron oxide
- B. nickel
- C. vanadium pentoxide
- D. silica gel Discuss
- 6. Urea is represented as
Options- A. NH2.CO.NH2
- B. NH3CO.CH3
- C. NH.CO2.NH
- D. NH3.CO2.NH3 Discuss
- 7. Reaction of orthophosphoric acid with soda ash produces
Options- A. sodium tripolyphosphate (STPP)
- B. tricresyl phosphate
- C. tributyl phosphate
- D. nitrophosphate Discuss
- 8. Sodium tri poly phosphate (STPP) is manufactured by reaction of phosphoric acid with sodium
Options- A. carbonate
- B. phosphate
- C. bicarbonate
- D. silicate Discuss
- 9. 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
- 10. H3PO4 is the chemical formula of __________ phosphoric acid.
Options- A. pyro
- B. ortho
- C. meta
- D. none of these Discuss
Fertiliser Technology problems
Search Results
Correct Answer: urea
Correct Answer: 60
Correct Answer: during the early stage of growth to promote development of stem and leaves.
Correct Answer: ammonium carbonate
Correct Answer: reduced iron oxide
Correct Answer: NH2.CO.NH2
Correct Answer: sodium tripolyphosphate (STPP)
Correct Answer: carbonate
Correct Answer: 13% N2 and 43% P2O5
Correct Answer: ortho
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