Fertiliser Technology problems
- 1. Which of the following does not come under the category of'primary nutrient' for plant growth?
Options- A. Potassium
- B. Nitrogen
- C. Phosphorous
- D. Sulphur Discuss
Correct Answer: Sulphur
- 2. Gas based fertiliser plants use
Options- A. natural gas as a source of hydrogen.
- B. natural gas as heating medium.
- C. coal gas as a source of hydrogen.
- D. coal gas as heating medium. Discuss
Correct Answer: natural gas as a source of hydrogen.
- 3. Which nutrient in fertiliser makes the plant stems stronger and increases branching?
Options- A. Nitrogen
- B. Phosphorous
- C. Potassium
- D. Calcium Discuss
Correct Answer: Phosphorous
- 4. C/H ratio (by weight) of naphtha used in nitrogenous fertiliser making is about
Options- A. 2
- B. 6
- C. 13
- D. 20 Discuss
Correct Answer: 6
- 5. Which of the following fertilisers is needed for promoting the development of leaves and stems during early stages of plant growth?
Options- A. Nitrogeneous fertiliser
- B. Potassic fertiliser
- C. Phosphatic fertiliser
- D. None of these Discuss
Correct Answer: Nitrogeneous fertiliser
- 6. Which is the best fertiliser for paddy?
Options- A. Ammonium sulphate
- B. Nitro-phosphate
- C. Superphosphate
- D. Potassium nitrate Discuss
Correct Answer: Ammonium sulphate
- 7. Low grade coal is __________ to produce ammonia synthesis gas.
Options- A. hydrogenated
- B. liquefied
- C. gasified
- D. dehydrogenated Discuss
Correct Answer: gasified
- 8. In natural gas, the C/H ratio (by weight) varies in the range of
Options- A. 3-4
- B. 8-10
- C. 15-17
- D. 20-25 Discuss
Correct Answer: 3-4
- 9. Chemical formula of metaphosphoric acid is
Options- A. H3PO4
- B. H4P2O7
- C. HPO3
- D. same as that of pyrophosphoric acid Discuss
Correct Answer: HPO3
- 10. Fusion zone in the electric furnace used for reduction of phosphate rock to elemental phosphorous is maintained at __________ °C.
Options- A. 250-300
- B. 500-750
- C. 950-1050
- D. 1400-1450 Discuss
Correct Answer: 1400-1450
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