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MCQs

Total Questions : 3103 | Page 5 of 311 pages
Question 41. Bordeaux mixture is a/an
  1.    Fertiliser
  2.    Inorganic fungicide
  3.    Insecticide
  4.    Explosive
 Discuss Question
Answer: Option B. -> Inorganic fungicide
Question 42. The noble gas which occurs most abundantly in the atmosphere is
  1.    Helium
  2.    Neon
  3.    Krypton
  4.    Argon
 Discuss Question
Answer: Option D. -> Argon
Question 43. BHC (Benzene hexachloride) is made by the chlorination of benzene
  1.    Which is an addition reaction
  2.    Which is a substitution reaction
  3.    In absolute dark
  4.    In presence of sunlight
 Discuss Question
Answer: Option A. -> Which is an addition reaction
Question 44. Multistage catalytic converter is not used in the
  1.    Conversion of SO₂ to SO₃
  2.    NH₃ synthesis reaction
  3.    Both A & B
  4.    Neither A nor B
 Discuss Question
Answer: Option B. -> NH₃ synthesis reaction
Question 45. Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in
  1.    Pyrolysis of oil
  2.    Sintering of porous catalyst
  3.    Hydrogen embrittlement
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 46. Sand and __________ is fused at 1300°C, to produce sodium silicate.
  1.    Limestone
  2.    Soda ash
  3.    Coke
  4.    Sodium sulphate
 Discuss Question
Answer: Option B. -> Soda ash
Question 47. Ca(OH)₂ is called
  1.    Quicklime
  2.    Slaked lime
  3.    Limestone
  4.    Gypsum
 Discuss Question
Answer: Option B. -> Slaked lime
Question 48. Calcination of gypsum produces
  1.    Plaster of paris
  2.    Salt cake
  3.    Nitre cake
  4.    Lime
 Discuss Question
Answer: Option A. -> Plaster of paris
Question 49. High temperature carbonisation of coal produces
  1.    Inferior coke compared to low temperature carbonisation
  2.    Less of gases compared to liquid products
  3.    Larger quantity of tar compared to low temperature carbonisation
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 50. CaO is called
  1.    Quick lime
  2.    Slaked lime
  3.    Limestone
  4.    Calcite
 Discuss Question
Answer: Option A. -> Quick lime

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