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Total Questions : 1041 | Page 12 of 105 pages
Question 111. Gas based fertiliser plants use
  1.    Natural gas as a source of hydrogen
  2.    Natural gas as heating medium
  3.    Coal gas as a source of hydrogen
  4.    Coal gas as heating medium
 Discuss Question
Answer: Option A. -> Natural gas as a source of hydrogen
Question 112. Ammonium nitrate (is mixed with limestone) is not used as fertiliser as such, because
  1.    It is hygroscopic and explosive in nature
  2.    It is highly acidic in nature
  3.    It is a liquid at room temperature
  4.    Its nitrogen content is very less
 Discuss Question
Answer: Option A. -> It is hygroscopic and explosive in nature
Question 113. Triple superphosphate is made by reacting phosphate rock with __________ acid.
  1.    Phosphoric
  2.    Nitric
  3.    Sulphuric
  4.    Hydrochloric
 Discuss Question
Answer: Option A. -> Phosphoric
Question 114. Which is a catalyst promoter used in catalytic ammonia synthesis reaction?
  1.    Al₂O₃
  2.    Cr₂O₃
  3.    K₂O
  4.    MnO
 Discuss Question
Answer: Option C. -> K₂O
Question 115. Though kinetics of ammonia synthesis dictates the use of low temperature for high equilibrium conversion, yet it is kept moderately high (550°C), because at low temperature
  1.    Rate of reaction is very low
  2.    Very high pressure is required resulting in costly pressure vessel
  3.    Space velocity of gas is very low resulting in decreased conversion
  4.    None of these
 Discuss Question
Answer: Option A. -> Rate of reaction is very low
Question 116. Catalyst used in Haber's process for ammonia production is
  1.    Reduced iron oxide
  2.    Nickel
  3.    Vanadium pentoxide
  4.    Silica gel
 Discuss Question
Answer: Option A. -> Reduced iron oxide
Question 117. Chemical formula of biuret is
  1.    NH₂.CO.NH₂
  2.    NH₃.COO.NH₃
  3.    NH₂CONHCONH₂
  4.    NH₄COONH₂
 Discuss Question
Answer: Option C. -> NH₂CONHCONH₂
Question 118. Action of phosphoric acid on rock phosphate produces
  1.    Superphosphate
  2.    Triple superphosphate
  3.    Nitrophosphate
  4.    Diammonium phosphate
 Discuss Question
Answer: Option B. -> Triple superphosphate
Question 119. Which of the following gasifiers can be attached to coal based fertiliser plants?
  1.    Lurgi (high pressure) gasifier
  2.    Kopper-Totzek gasifier
  3.    Gasifier working at 20 atm
  4.    Gasifier working at 40 atm
 Discuss Question
Answer: Option B. -> Kopper-Totzek gasifier
Question 120. Calcium ammonium nitrate (CAN) is
  1.    A mixed fertiliser
  2.    A straight fertiliser
  3.    A complex fertiliser
  4.    Not a fertiliser ; it is an explosive
 Discuss Question
Answer: Option C. -> A complex fertiliser

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