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MCQs

Total Questions : 1622 | Page 2 of 163 pages
Question 11. In sweetening process, solutizer agent used with caustic alkali is
  1.    Potassium isobutyrate
  2.    Sodium plumbite
  3.    Methanol
  4.    Phenol
 Discuss Question
Answer: Option A. -> Potassium isobutyrate
Question 12. In catalytic alkylation, higher iso-butane to olefin ratio gives
  1.    Low final boiling point product
  2.    Higher yield
  3.    Both A & B
  4.    Neither A nor B
 Discuss Question
Answer: Option A. -> Low final boiling point product
Question 13. Aromatics have the highes __________ of all the hydrocarbons of same carbon atoms.
  1.    Smoke point
  2.    Octane number
  3.    Cetane number
  4.    Viscosity
 Discuss Question
Answer: Option B. -> Octane number
Question 14. Thermofer catalytic cracking process is a __________ process.
  1.    Fixed bed
  2.    Moving bed
  3.    Fluidised bed
  4.    Non-catalytic
 Discuss Question
Answer: Option D. -> Non-catalytic
Question 15. The order of preference for feedstock to a catalytic reformer is
  1.    Catalytic naphtha - coking naphtha - virgin naphtha
  2.    Coking naphtha - virgin naphtha - catalytic naphtha
  3.    Virgin naphtha - catalytic naphtha - coking naphtha
  4.    Virgin naphtha - coking naphtha - catalytic naphtha
 Discuss Question
Answer: Option B. -> Coking naphtha - virgin naphtha - catalytic naphtha
Question 16. Pick out the wrong statement.
  1.    Pensky-Marten apparatus is used for determining flash points above 50°C
  2.    Characterisation factor of paraffinic crude oil is more than 12
  3.    Abel apparatus is used for determining flash points below 50°C
  4.    An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index
 Discuss Question
Answer: Option D. -> An oil having high susceptibility to change in viscosity with temperature changes, has a high viscosity index
Question 17. Iso-octane is used as a reference substance in the definition of octane number and it is assigned an octane number value of 100. Iso-octance is chemically known as
  1.    α-methyl naphthalene
  2.    2-2-4 tri methyl pentane
  3.    1, 3 butadiene
  4.    Tetra methyl ethylene
 Discuss Question
Answer: Option B. -> 2-2-4 tri methyl pentane
Question 18. Flash point of an oil is determined by the
  1.    Pensky Martens apparatus
  2.    Ramsbottom apparatus
  3.    Saybolt viscometer
  4.    Conradson apparatus
 Discuss Question
Answer: Option A. -> Pensky Martens apparatus
Question 19. Flash point of an oil gives an idea of the
  1.    Nature of boiling point diagram of the system
  2.    Amount of low boiling fraction present
  3.    Explosion hazards
  4.    All of the above
 Discuss Question
Answer: Option A. -> Nature of boiling point diagram of the system
Question 20. Cetane number of high speed diesel must be?
  1.    30
  2.    45
  3.    75
  4.    95
 Discuss Question
Answer: Option B. -> 45

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