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MCQs

Total Questions : 1622 | Page 8 of 163 pages
Question 71. Diesel index.(an alternative index for expressing the quality of diesel) is
  1.    Determined by using a test engine
  2.    Not related to aniline point
  3.    Equal to cetane number plus 3
  4.    All of the above
 Discuss Question
Answer: Option C. -> Equal to cetane number plus 3
Question 72. Smoke point of kerosene is the
  1.    Time after which smoking starts on burning
  2.    Temperature at which smoking starts
  3.    Maximum height of flame (in mm) without causing smoking, when burnt in a standard lamp
  4.    None of these
 Discuss Question
Answer: Option B. -> Temperature at which smoking starts
Question 73. __________ treatment is done for appreciable improvement in viscosity index of lubricating oil.
  1.    Acid
  2.    Solvent extraction
  3.    Alkali
  4.    Clay
 Discuss Question
Answer: Option B. -> Solvent extraction
Question 74. The colour of gasoline is an indication of its
  1.    Octane number
  2.    Lead susceptibility
  3.    Gum forming tendency & thoroughness of refining
  4.    None of these
 Discuss Question
Answer: Option C. -> Gum forming tendency & thoroughness of refining
Question 75. Boiling range of motor gasoline is an indication of the
  1.    Case of starting
  2.    Rate of acceleration
  3.    Vapour locking tendency
  4.    All of the above
 Discuss Question
Answer: Option B. -> Rate of acceleration
Question 76. In solutizer sweetening process, solutizer solution used is
  1.    Methanol in Unisol process
  2.    Naphthenic acid in Mercapsol process
  3.    Both A & B
  4.    Neither A nor B
 Discuss Question
Answer: Option C. -> Both A & B
Question 77. Higher pressure in the reforming reactor
  1.    Increases coke formation
  2.    Increases the rate of reaction
  3.    Produces high octane number gasoline
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 78. Bottom product of atmospheric pressure crude oil distillation column is termed as
  1.    Reduced crude
  2.    Heavy ends
  3.    Asphalt
  4.    Residuum
 Discuss Question
Answer: Option A. -> Reduced crude
Question 79. For gasoline, the flash point (
  1.    Abel apparatus
  2.    Pensky-Marten's apparatus
  3.    Saybolt chromometer
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 80. Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).
  1.    5-10
  2.    30-80
  3.    150-250
  4.    350-400
 Discuss Question
Answer: Option B. -> 30-80

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