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- Question
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.
- Correct Answer
- Red phosphorous is the most reactive allotropic form of phosphorous.
- 1. 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
- 2. Urea is a __________ fertiliser.
Options- A. nitrogenous
- B. potassic
- C. phosphatic
- D. none of these Discuss
- 3. 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 Discuss
- 4. 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
- 5. Hydrogen content of coke oven gas is __________ percent.
Options- A. 4
- B. 22
- C. 58
- D. 84 Discuss
- 6. 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
- 7. 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
- 8. In calcium ammonium nitrate (CAN) fertil-ser
Options- A. nitrate nitrogen is quick acting
- B. ammoniacal nitrogen is quick acting
- C. nitrate nitrogen is slower acting
- D. none of these Discuss
- 9. Conversion of yellow phosphorous to red phosphorous is done by heating it in covered retorts at __________ °C in absence of air.
Options- A. 50-80
- B. 250-400
- C. 1000-1200
- D. 800-900 Discuss
- 10. Electric process as compared to wet process (for the manufacture of phosphoric acid)
Options- A. can use only high grade phosphate rock.
- B. is used less frequently.
- C. produces a valuable by-product called gypsum.
- D. is weak acid process. Discuss
Fertiliser Technology problems
Search Results
Correct Answer: Stengel
Correct Answer: nitrogenous
Correct Answer: decreases biuret formation
Correct Answer: Maharashtra and Gujarat
Correct Answer: 58
Correct Answer: avoid the risk of explosion.
Correct Answer: iron
Correct Answer: nitrate nitrogen is quick acting
Correct Answer: 250-400
Correct Answer: is used less frequently.
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