Fertiliser Technology problems
- 1. Reaction of dilute sulphuric acid with phosphate rock produces
Options- A. phosphoric acid
- B. superphosphate
- C. triple superphosphate
- D. gypsum Discuss
Correct Answer: phosphoric acid
- 2. 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
Correct Answer: adversely affects the yield of urea.
- 3. 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
Correct Answer: Sindri (under FCI)
- 4. Which of the following does not come under the category of 'secondary nutrient' for plant growth?
Options- A. Calcium
- B. Magnesium
- C. Sulphur
- D. Oxygen Discuss
Correct Answer: Oxygen
- 5. Pick out the wrong statement.
Options- A. Yellow phosphorous which is the most reactive allotropic form of phosphorous is transported under water.
- B. Apatite is the principal material present in phosphate rock which is chemically Ca10 (PO4)6 (F, Cl, OH).
- C. Urea is more hygroscopic than ammonium nitrate.
- D. Nitrogen fixation means the process of bringing atmospheric nitrogen into combination i.e. into nitrogen compound form. Discuss
Correct Answer: Urea is more hygroscopic than ammonium nitrate.
- 6. Vetrocoke solution is
Options- A. a mixture of K2CO3 and As2O3.
- B. K2SO4.
- C. a mixture of Na2CO3 and As2O3.
- D. Na2SO4. Discuss
Correct Answer: a mixture of K2CO3 and As2O3.
- 7. Ammonium sulphate fertiliser is
Options- A. the highest concentration nitrogenous fertiliser.
- B. the best fertiliser for paddy.
- C. a basic fertiliser.
- D. a neutral fertiliser. Discuss
Correct Answer: the best fertiliser for paddy.
- 8. CO2 present in reformed gas (obtained by steam reforming of naphtha) is removed by absorbing in
Options- A. mono-ethanolamine (MEA)
- B. slaked lime
- C. ammoniacal liquor
- D. Methyl-Ethyl Ketone (MEK) Discuss
Correct Answer: mono-ethanolamine (MEA)
- 9. Conditioners like finely divided peat are added to the fertiliser to
Options- A. counteract burning.
- B. avoid caking & hardening.
- C. produce bulk.
- D. increase its solubility. Discuss
Correct Answer: avoid caking & hardening.
- 10. Fertiliser plants get their N2 requirements
Options- A. by fractionation of liquified air.
- B. by dissociating oxides of nitrogen.
- C. from coal gas (coke oven gas).
- D. from producer gas. Discuss
Correct Answer: by fractionation of liquified air.
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