Discussion
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- Question
Heating of orthophosphoric acid to 250°C produces
Options- A. metaphosphoric acid
- B. pyrophosphoric acid
- C. no change in it
- D. none of these
- Correct Answer
- pyrophosphoric acid
- 1. Ammonia synthesis gas is produced from natural gas by
Options- A. thermal cracking
- B. steam reforming
- C. partial oxidation
- D. hydrogenation Discuss
- 2. Urea is formed only
Options- A. in liquid phase
- B. in vapour phase
- C. at very high temperature
- D. at very low pressure (vacuum) Discuss
- 3. Commercial fertilisers are available mostly in the form of
Options- A. powder
- B. grannules
- C. lumps
- D. flakes Discuss
- 4. Superphosphate is manufactured by reacting phosphate rock with
Options- A. acetic acid
- B. sulphuric acid
- C. aluminium chloride
- D. none of these Discuss
- 5. Which is the most suitable fertiliser for paddy?
Options- A. CAN
- B. Ammonium sulphate
- C. Ammonium nitrate
- D. Superphosphate Discuss
- 6. Calcium ammonium nitrate (CAN) is
Options- A. a mixed fertiliser
- B. a straight fertiliser
- C. a complex fertiliser
- D. not a fertiliser ; it is an explosive Discuss
- 7. Dehydration of ammonium carbamate (to produce urea) is a/an __________ reaction.
Options- A. reversible
- B. catalytic
- C. exothermic
- D. endothermic Discuss
- 8. Reaction of dilute sulphuric acid with phosphate rock produces
Options- A. phosphoric acid
- B. superphosphate
- C. triple superphosphate
- D. gypsum Discuss
- 9. During conversion of ammonium carbamate into urea, presence of large excess of water
Options- A. increases the yield of urea.
- B. adversely affects the yield of urea.
- C. reduces the evaporator load by diluting the urea solution.
- D. does not affect the yield of urea. Discuss
- 10. Fertiliser plant making ammonium sulphate employing gypsum-ammonia reaction (usual practice is to use ammonia and sulphuric acid) is located at
Options- A. Rourkela (under SAIL)
- B. Bokaro (under SAIL)
- C. Sindri (under FCI)
- D. Baroda (under G.S.F.C.) Discuss
Fertiliser Technology problems
Search Results
Correct Answer: steam reforming
Correct Answer: in liquid phase
Correct Answer: grannules
Correct Answer: sulphuric acid
Correct Answer: Ammonium sulphate
Correct Answer: a complex fertiliser
Correct Answer: endothermic
Correct Answer: phosphoric acid
Correct Answer: adversely affects the yield of urea.
Correct Answer: Sindri (under FCI)
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