Discussion
Home ‣ Chemical Engineering ‣ Fertiliser Technology Comments
- Question
Urea is a better fertilizer than ammonium sulphate, because
Options- A. it is cheaper.
- B. nitrogen content is higher.
- C. it is not poisonous.
- D. it is easy to manufacture.
- Correct Answer
- nitrogen content is higher.
- 1. In an ammonia plant, the purge off is essential to
Options- A. maintain inert gas concentration within a limit.
- B. remove excess poisonous gases.
- C. maintain H2 : N2 ratio at 3 :1.
- D. remove uncondensed ammonia vapour. Discuss
- 2. Out of the following, N2 content is minimum in
Options- A. urea
- B. ammonium nitrate
- C. ammonium sulphate
- D. ammonium chloride Discuss
- 3. In the manufacture of orthophosphoric acid by strong H2SO4 leaching wet process, keeping the reactor temperature above 100°C, results in the formation of undesriable
Options- A. CaSO4 .
H2O and CaSO4 crystals - B. pyrophosphoric acid
- C. metaphosphoric acid
- D. all (a), (b) and (c). Discuss
- 4. Which of the following fertilisers is required for the development of fibrous materials of the plants and of the sugar of vegetable & fruits?
Options- A. Nitrogenous fertilisers
- B. Phosphatic fertilisers
- C. Potassic fertiliser
- D. None of these Discuss
- 5. P2O5 content in superphosphate is about __________ percent.
Options- A. 30-35
- B. 15-20
- C. 65-70
- D. 85-90 Discuss
- 6. A mixture of phosphate rock __________ is heated in an electric furnace to produce phosphorous.
Options- A. salt & coke
- B. sand & coke
- C. and coke
- D. and sand Discuss
- 7. Excessive use of chemical fertilisers causes shrivelling of the roots and wilting of the plant, because the
Options- A. osmotic pressure of the soil water becomes less than that of the plant sap.
- B. soil becomes too alkaline.
- C. osmotic pressure of the soil water becomes higher than that of the plant sap.
- D. soil becomes too acidic. Discuss
- 8. Potassic fertilisers
Options- A. are useful during early stage of the plant growth.
- B. stimulate early growth and accelerate seeding.
- C. help in development of starches of potatoes and grain.
- D. none of these. Discuss
- 9. Dehydration of ammonium carbamate to yield urea is a/an __________ reaction.
Options- A. exothermic
- B. endothermic
- C. autocatalytic
- D. catalytic Discuss
- 10. Heating of coke, sand & phosphate rock in an electric furnace is done for the manufacture of
Options- A. phosphoric acid.
- B. superphosphate.
- C. phosphorous.
- D. triple superphosphate. Discuss
Fertiliser Technology problems
Search Results
Correct Answer: maintain H2 : N2 ratio at 3 :1.
Correct Answer: ammonium sulphate
Correct Answer: CaSO4 .
H2O and CaSO4 crystals Correct Answer: Potassic fertiliser
Correct Answer: 15-20
Correct Answer: sand & coke
Correct Answer: osmotic pressure of the soil water becomes higher than that of the plant sap.
Correct Answer: help in development of starches of potatoes and grain.
Correct Answer: endothermic
Correct Answer: phosphorous.
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.