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- Question
Lower temperature and large excess of ammonia in urea melt
Options- A. increases biuret formation
- B. decreases biuret formation
- C. is undersirable
- D. does not effect biuret formation
- Correct Answer
- decreases biuret formation
- 1. Two gas based fertiliser plants are located in
Options- A. Maharashtra and Gujarat
- B. Maharashtra and Orissa
- C. Gujarat and Madhya Pradesh
- D. Jharkhand and Chattisgarh Discuss
- 2. Hydrogen content of coke oven gas is __________ percent.
Options- A. 4
- B. 22
- C. 58
- D. 84 Discuss
- 3. Red phosphorous is changed into white phosphorous by
Options- A. heating in presence of light.
- B. melting under pressure.
- C. vaporisation followed by condensation.
- D. none of these. Discuss
- 4. Action of phosphoric acid on rock phosphate produces
Options- A. superphosphate
- B. triple superphosphate
- C. nitrophosphate
- D. diammonium phosphate Discuss
- 5. H3PO4 is the chemical formula of __________ phosphoric acid.
Options- A. pyro
- B. ortho
- C. meta
- D. none of these Discuss
- 6. Urea is a __________ fertiliser.
Options- A. nitrogenous
- B. potassic
- C. phosphatic
- D. none of these Discuss
- 7. Vapor phase reaction of ammonia & nitric acid to produce ammonium nitrate is termed as the __________ process.
Options- A. Haber's
- B. Stengel
- C. Le-chatlier's
- D. Du-pont's Discuss
- 8. Pick out the wrong statement.
Options- A. 'Green acid' is the other name of phosphoric acid produced by the reaction of phosphate rock & sulphuric acid.
- B. Chemically unreactive nature of red phosphorous is due to its polymeric structure.
- C. Red phosphorous is the most reactive allotropic form of phosphorous.
- D. Red phosphorous, which is used in the manufacture of safety matches, is converted into white phosphorous by vaporisation followed by condensation. Discuss
- 9. Ammonium nitrate (a fertiliser) is coated with limestone powder to
Options- A. increase its nitrogen content.
- B. cut down its production cost.
- C. avoid the risk of explosion.
- D. add extra nutrient as fertiliser. Discuss
- 10. Catalyst used in the manufacture of NH3 by Haber's process is finely divided
Options- A. nickel
- B. iron
- C. vanadium pentoxide
- D. alumina Discuss
Fertiliser Technology problems
Search Results
Correct Answer: Maharashtra and Gujarat
Correct Answer: 58
Correct Answer: vaporisation followed by condensation.
Correct Answer: triple superphosphate
Correct Answer: ortho
Correct Answer: nitrogenous
Correct Answer: Stengel
Correct Answer: Red phosphorous is the most reactive allotropic form of phosphorous.
Correct Answer: avoid the risk of explosion.
Correct Answer: iron
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