Discussion
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- Question
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.
- Correct Answer
- its activity declines rapidly, if heated to above 520°C.
- 1. 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
- 2. The main constituent of rock phosphate is
Options- A. mono-calcium phosphate
- B. di-calcium phosphate
- C. fluorspar
- D. none of these Discuss
- 3. Nitrolime is chemically known as
Options- A. calcium nitrate
- B. ammonium nitrate
- C. calcium ammonium nitrate (CAN)
- D. none of these Discuss
- 4. A fertiliser plant is classified as a gas based fertiliser plant, when it uses __________ gas as a source of hydrogen for the manufacture of ammonia.
Options- A. coke oven
- B. producer
- C. natural
- D. coal Discuss
- 5. 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
- 6. 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
- 7. 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
- 8. 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
- 9. 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 Discuss
- 10. Reaction of cresylic acid with __________ produces tricresyl phosphate.
Options- A. phosphorous pentoxide
- B. phosphorous oxychloride
- C. ammonium phosphate
- D. calcium phosphate Discuss
Fertiliser Technology problems
Search Results
Correct Answer: all (a), (b) and (c)
Correct Answer: di-calcium phosphate
Correct Answer: calcium ammonium nitrate (CAN)
Correct Answer: natural
Correct Answer: phosphorous.
Correct Answer: increased degree of conversion of CO2 to urea.
Correct Answer: Urea
Correct Answer: Butyl alcohol
Correct Answer: Carbon
Correct Answer: phosphorous oxychloride
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