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MCQs

Total Questions : 1041 | Page 2 of 105 pages
Question 11. Catalyst used in the manufacture of NH₃ by Haber's process is finely divided
  1.    Nickel
  2.    Iron
  3.    Vanadium pentoxide
  4.    Alumina
 Discuss Question
Answer: Option B. -> Iron
Question 12. Base suspension fertiliser essentially contains
  1.    13% N₂ and 43% P₂O₅
  2.    43% N₂ and 13% P₂O₅
  3.    43% N₂ and 13% K₂O
  4.    43% K₂O and 43% P₂O₅
 Discuss Question
Answer: Option A. -> 13% N₂ and 43% P₂O₅
Question 13. Temperature and pressure in ammonia converter is
  1.    200 atm, 1000°C
  2.    450 atm, 200°C
  3.    450 atm, 550°C
  4.    450 atm, 1000°C
 Discuss Question
Answer: Option C. -> 450 atm, 550°C
Question 14. Lower temperature and large excess of ammonia in urea melt
  1.    Increases biuret formation
  2.    Decreases biuret formation
  3.    Is undersirable
  4.    Does not effect biuret formation
 Discuss Question
Answer: Option B. -> Decreases biuret formation
Question 15. Which of the following set of conditions is favourable for the maximum yield of ammonia by Haber's process?
  1.    High pressure, low reactants concentration, high temperature
  2.    High pressure, low reactants concentration, low temperature
  3.    High pressure, high reactants concentration, low temperature
  4.    Low pressure, high reactants concentration, low temperature
 Discuss Question
Answer: Option C. -> High pressure, high reactants concentration, low temperature
Question 16. With increases in pressure, the conversion of ammonium carbamate into urea
  1.    Increases
  2.    Decreases
  3.    Remains unaltered
  4.    Can either increase or decrease depends on biuret content
 Discuss Question
Answer: Option A. -> Increases
Question 17. Steam reforming of naphtha is a source of hydrogen production for nitrogeneous fertiliser industry. What is the usual ratio of steam to carbon maintained in the process of steam reforming of naphtha?
  1.    1.5:1
  2.    3.5:1
  3.    10:1
  4.    15:1
 Discuss Question
Answer: Option B. -> 3.5:1
Question 18. Nitrogen content of a nitrogenous fertiliser is 35%. It could be
  1.    Urea
  2.    Ammonium nitrate
  3.    Calcium ammonium nitrate (CAN)
  4.    Ammonium sulphate
 Discuss Question
Answer: Option B. -> Ammonium nitrate
Question 19. Flushing liquor used for cooling coke oven gas constitutes of
  1.    Ammoniacal liquor
  2.    K₂CO₃ solution
  3.    Dilute H₂SO₄
  4.    Dilute HCl
 Discuss Question
Answer: Option A. -> Ammoniacal liquor
Question 20. Optimum reaction temperature in steam reforming of naphtha is __________ °C.
  1.    700 - 1000
  2.    300 - 450
  3.    1500-1700
  4.    100-200
 Discuss Question
Answer: Option A. -> 700 - 1000

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