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MCQs

Total Questions : 1622 | Page 159 of 163 pages
Question 1581. Mercaptans are________________?
  1.    Low boiling sulphur compounds
  2.    Added in LPG cylinders to detect gas leakage by its smell
  3.    Undesirable in petrol, as they reduce its octane number
  4.    All A., B. and C.
 Discuss Question
Answer: Option D. -> All A., B. and C.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1582. Main constituent of natural gas is___________________?
  1.    CH4
  2.    C2H2
  3.    C2H4
  4.    C2H6
 Discuss Question
Answer: Option A. -> CH4
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1583. Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API) ?
  1.    Diesel
  2.    Gasoline
  3.    Atmospheric gas oil
  4.    Vacuum gas oil
 Discuss Question
Answer: Option C. -> Atmospheric gas oil
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1584. Smoke volatility index is equal to smoke point plus______________________?
  1.    0.42 × (% distilled at 204°C)
  2.    5 mm
  3.    0.84 × (% distilled at 204°C)
  4.    10 mm approximately
 Discuss Question
Answer: Option A. -> 0.42 × (% distilled at 204°C)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1585. Higher viscosity of lubricating oil usually signifies_______________________?
  1.    Lower Reid vapour pressure
  2.    Higher acid number
  3.    Higher flash point and fire point
  4.    Lower flash point and fire point
 Discuss Question
Answer: Option C. -> Higher flash point and fire point
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1586. 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 A., B. & C.
 Discuss Question
Answer: Option C. -> Equal to cetane number plus 3
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1587. Presence of sulphur in gasoline___________________?
  1.    Leads to corrosion
  2.    Increases lead susceptibility
  3.    Decreases gum formation
  4.    Helps during stabilisation
 Discuss Question
Answer: Option A. -> Leads to corrosion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1588. Operating temperature and pressure in catalytic reforming is about_____________?
  1.    1-5 Kgf/cm2 & 200°C
  2.    15-45 Kgf/cm2 & 450-550°C
  3.    50 – 75 kgf/cm2 & 600 – 800°C
  4.    5-10 kgf/cm2 & 150 – 250°C
 Discuss Question
Answer: Option B. -> 15-45 Kgf/cm2 & 450-550°C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1589. Name the endothermic reaction out of the following ?
  1.    Catalytic cracking
  2.    Hydrocracking
  3.    Dehydrogeneration of Naphthene to produce aromatic
  4.    Catalytic polymerisation
 Discuss Question
Answer: Option C. -> Dehydrogeneration of Naphthene to produce aromatic
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1590. Solvent used in duo-sol extraction for lube oil upgradation is a mixture of______________?
  1.    Propane & phenol-cresol mixture
  2.    Methyl ethyl ketone & glycol
  3.    Phenol & furfural
  4.    Propane & liquid sulphur dioxide
 Discuss Question
Answer: Option A. -> Propane & phenol-cresol mixture
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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