Petroleum Refinery Engineering

31. Both asphalt and wax are produced by _________ base crude oils.

  1. Naphthenic
  2. Asphalt
  3. Paraffin
  4. Mixed

Correct answer: (D)
Mixed

32. Bottom product of atmospheric pressure crude oil distillation column is termed as

  1. Reduced crude
  2. Heavy ends
  3. Asphalt
  4. Residuum

Correct answer: (A)
Reduced crude

33. Breathing loss on storage of gasoline occurs due to the

  1. Presence of unsaturated air
  2. Fluctuation of ambient temperature during day and night
  3. Both (A) and (B)
  4. Neither (A) nor (B)

Correct answer: (B)
Fluctuation of ambient temperature during day and night

34. Butadiene is a/an

  1. Di-olefin
  2. Naphthene
  3. Aromatic
  4. Olefin

Correct answer: (A)
Di-olefin

35. CnH2n is the general formula for

  1. Olefins
  2. Naphthenes
  3. Both (A) and (B)
  4. Neither (A) nor (B)

Correct answer: (C)
Both (A) and (B)

36. Carbon percentage (by weight) in crude petroleum may be about

  1. 65
  2. 75
  3. 85
  4. 95

Correct answer: (C)
85

37. Carbon/hydrogen ratio (by weight) is maximum (out of following) for

  1. Gasoline
  2. Kerosene
  3. Light gas oil
  4. Heavy fuel oil

Correct answer: (A)
Gasoline

38. Casing head gasoline is the liquid

  1. Butane
  2. Propane
  3. Natural gas
  4. Gasoline separated from wet natural gas by compression

Correct answer: (A)
Butane

39. Catalyst used in alkylation process is

  1. Sulphuric acid
  2. Nickel
  3. Silica gel
  4. Alumina

Correct answer: (A)
Sulphuric acid

40. Catalyst used in catalytic polymerisation which produces polymer gasoline is

  1. H2SO4
  2. H3PO4
  3. Both (A) and (B)
  4. AlCl3

Correct answer: (C)
Both (A) and (B)

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