Discussion
Home ‣ Chemical Engineering ‣ Fertiliser Technology Comments
- Question
Catalyst used in desulphurisation of naphtha is
Options- A. Co-Mo
- B. Pt-Rh
- C. silica gel
- D. nickel
- Correct Answer
- Co-Mo
- 1. Though liquid ammonia itself is a fertiliser (with 82% nitrogen content) yet it is commonly not used as such in a tropical country like India, because it
Options- A. has a pungent smell.
- B. vaporises at normal temperature.
- C. is toxic and highly corrosive.
- D. is in short supply. Discuss
- 2. Temperature and pressure in ammonia converter is
Options- A. 200 atm, 1000°C
- B. 450 atm, 200°C
- C. 450 atm, 550°C
- D. 450 atm, 1000°C Discuss
- 3. Main constituent of phosphate rock is
Options- A. ammonium phosphate
- B. flour apatite
- C. calcium fluoride
- D. calcium phosphate Discuss
- 4. Conversion of yellow phosphorus to red phosphorous is done in retorts at 250-450°C in the
Options- A. presence of an inert atmosphere.
- B. presence of a reducing atmosphere.
- C. absence of air.
- D. presence of an oxidising atmosphere. Discuss
- 5. Liquid ammonia and 60% nitric acid reaction (which produces ammonium nitrate) is
Options- A. exothermic
- B. endothermic
- C. autocatalytic
- D. none of these Discuss
- 6. In the manufacture of H3 PO4 (ortho), ; strong H2 SO4 leaching wet process as compared to electric furnace process
Options- A. uses lower grade phosphate rock.
- B. requires lower capital investment in the plant.
- C. produces lower purity acid.
- D. is very costly. Discuss
- 7. Biuret formation in urea is kept at minimum (< 1 %), because it is
Options- A. corrosive in nature.
- B. toxic and harmful to some crops.
- C. helpful in decomposition of urea.
- D. explosive in nature. Discuss
- 8. Pick out the wrong statement.
Options- A. Loamy soil is the best soil for vigorous plant growth, while the clayey soil is solid and hence the plant roots penetrate with difficulty.
- B. Large excess use of nitrogenous fertiliser in land causes the problem of diarrhoea and cyanosis.
- C. Application of large excess of potassic fertiliser in soil increases the valuable carotene in fruits and vegetables.
- D. Cereal crops grown on alkaline soil absorb higher amount of flourides thereby spreading flourosis. Discuss
- 9. A potassic fertiliser contains 50% K2O. It could be
Options- A. potassium sulphate.
- B. potassium chloride.
- C. a mixture of NaCl+ KCl.
- D. none of these. Discuss
- 10. Raw materials for urea production are
Options- A. CO2 and N2
- B. CO2, H2 and N2
- C. NH3 and CO
- D. HNO3 and CaCO3 Discuss
Fertiliser Technology problems
Search Results
Correct Answer: vaporises at normal temperature.
Correct Answer: 450 atm, 550°C
Correct Answer: flour apatite
Correct Answer: absence of air.
Correct Answer: exothermic
Correct Answer: produces lower purity acid.
Correct Answer: toxic and harmful to some crops.
Correct Answer: Application of large excess of potassic fertiliser in soil increases the valuable carotene in fruits and vegetables.
Correct Answer: potassium sulphate.
Correct Answer: CO2, H2 and N2
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.