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MCQs

Total Questions : 1622 | Page 15 of 163 pages
Question 141. Diesel index is defined as
  1.    (°API) x (Aniline Point, °F)/100
  2.    (°API) x (Aniline Point, °C)/100
  3.    (°API) x (100)/Aniline Point, °F
  4.    (°API) x (100)/Aniline Point, °C
 Discuss Question
Answer: Option A. -> (°API) x (Aniline Point, °F)/100
Question 142. Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to
  1.    Increase its smoke point
  2.    Improve its oxidation stability
  3.    Decrease the breathing loss
  4.    None of these
 Discuss Question
Answer: Option B. -> Improve its oxidation stability
Question 143. Which of the following is used as a catalyst in fluidised bed catalytic cracking?
  1.    Silica-magnesia
  2.    Silica-alumina
  3.    Bentonite clays
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 144. Operating condition in the electrical dehydrators for crude oil is about
  1.    6.5 kgf/Cm² & 95°C
  2.    1 atm. & 110 °C
  3.    20 kgf/cm² & 110°C
  4.    50 atm. and 150°C
 Discuss Question
Answer: Option A. -> 6.5 kgf/Cm² & 95°C
Question 145. Flash point of diesel/kerosene (>50°C) is determined by the
  1.    Abel apparatus
  2.    Pensky-Martens apparatus
  3.    Saybolt chromometer
  4.    None of these
 Discuss Question
Answer: Option A. -> Abel apparatus
Question 146. Detergent is added as an additive in engine lubricating oil to
  1.    Reduce deposit formation
  2.    Keep contaminants in suspension
  3.    Increase oxidation stability
  4.    Prevent rusting
 Discuss Question
Answer: Option A. -> Reduce deposit formation
Question 147. Quinoline is a/an __________ compound.
  1.    Sulphur
  2.    Nitrogen
  3.    Oxygen
  4.    None of these
 Discuss Question
Answer: Option B. -> Nitrogen
Question 148. Smoke point of a good burning kerosene may be around __________ mm.
  1.    0-5
  2.    20-25
  3.    60-75
  4.    100-120
 Discuss Question
Answer: Option B. -> 20-25
Question 149. Flash point of motor gasoline may be around __________ °C.
  1.    10
  2.    45
  3.    100
  4.    150
 Discuss Question
Answer: Option B. -> 45
Question 150. Name the hydrocarbon having the poorest oxidation stability.
  1.    Naphthene
  2.    Olefin
  3.    Paraffin
  4.    Aromatics
 Discuss Question
Answer: Option D. -> Aromatics

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