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- Question
Which of the following does not come under the category of 'micro-nutrient' for plant growth?
Options- A. Chlorine
- B. Iron
- C. Boron
- D. Carbon
- Correct Answer
- Carbon
- 1. Which of the following solvents is used for the extraction of H3PO4 from CaCl2 solution during manufacture of ortho-phosphoric acid by wet process employing hydrochloric acid leaching?
Options- A. Iso propyl alcohol
- B. Butyl alcohol
- C. Toluene
- D. Hexane Discuss
- 2. Which of the following nitrogenous fertilisers has the highest percentage of nitrogen?
Options- A. Calcium nitrate
- B. Calcium ammonium nitrate (CAN)
- C. Urea
- D. Ammonium sulphate Discuss
- 3. An increase in the NH3/CO2 ratio in urea manufacture results in
Options- A. increased degree of conversion of CO2 to urea.
- B. decreased degree of conversion of NH3 to urea.
- C. decreased yield of urea.
- D. decreased specific volume of molten mass. Discuss
- 4. Iron is not used alone as a catalyst in ammonia synthesis, because
Options- A. its activity declines rapidly, if heated to above 520°C.
- B. it decomposes ammonia.
- C. it gets oxidised above 500°C.
- D. none of these. Discuss
- 5. Bio-fertilisers are cheaper, renewable and pollution free. They improve the __________ of the soil.
Options- A. nutrient supply
- B. texture
- C. water holding capacity
- D. all (a), (b) and (c) Discuss
- 6. Reaction of cresylic acid with __________ produces tricresyl phosphate.
Options- A. phosphorous pentoxide
- B. phosphorous oxychloride
- C. ammonium phosphate
- D. calcium phosphate Discuss
- 7. __________ is required more for leafy crops.
Options- A. Nitrogen
- B. Phosphorous
- C. Potassium
- D. Carbon Discuss
- 8. Monte catini process is a widely used process for the manufacture of
Options- A. urea
- B. calcium ammonium nitrate
- C. triple superposphate
- D. none of these Discuss
- 9. Pick out the wrong statement.
Options- A. Nitrogen is normally supplied in fertiliser either in ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions or nitrate ions and forms amino acids.
- B. Calcium present in the fertiliser helps in correcting the soil acidity.
- C. Particle size range of a good grannular fertiliser is 10-15 mesh and it contains less moisture as compared to finely divided powder form of fertiliser.
- D. Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens. Discuss
- 10. NPK means a __________ fertiliser.
Options- A. mixed
- B. potassic
- C. liquid
- D. solid Discuss
Fertiliser Technology problems
Search Results
Correct Answer: Butyl alcohol
Correct Answer: Urea
Correct Answer: increased degree of conversion of CO2 to urea.
Correct Answer: its activity declines rapidly, if heated to above 520°C.
Correct Answer: all (a), (b) and (c)
Correct Answer: phosphorous oxychloride
Correct Answer: Nitrogen
Correct Answer: urea
Correct Answer: Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens.
Correct Answer: mixed
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