Chemical Engineering Mcqs

Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic____________________?

• (A)  Cracking
• (B)  Polymerisation
• (C)  Reforming
• (D)  Isomerisation

Answer

Submitted By :Ali Uppal

‘Solvent naphtha’ used mostly as a solvent in paints and perfumery is produced by the _________________ of virgin naphtha into small boiling range cuts?

• (A)  Steam reforming
• (B)  Distillation
• (C)  Desulphurisation
• (D)  None of these

Answer

Submitted By :Ali Uppal

Octane number (unleaded) of gasoline produced by isomerisation of butane may be about __________________?

• (A)  45
• (B)  55
• (C)  70
• (D)  90

Answer

Submitted By :Ali Uppal

Molecular weight of crude petroleum may be around________________?

• (A)  50
• (B)  250
• (C)  1500
• (D)  5000

Answer

Submitted By :Ali Uppal

The characterisation factor of crude petroleum oil is around__________________?

• (A)  3
• (B)  11
• (C)  22
• (D)  28

Answer

Submitted By :Ali Uppal

Mercaptans is represented as (where R and R’ are alkyl groups) _____________________?

• (A)  R-COOH
• (B)  R-S-H
• (C)  R-S-R
• (D)  R-S-R’

Answer

Submitted By :Ali Uppal

Which of the following is desirable in diesel and kerosene but is undesirable in gasoline ?

• (A)  Aromatics
• (B)  Mercaptans
• (C)  Paraffins
• (D)  Naphthenic acid

Answer

Submitted By :Ali Uppal

Flash point of diesel/kerosene (>50°C) is determined by the_______________?

• (A)  Abel apparatus
• (B)  Pensky-Martens apparatus
• (C)  Saybolt chromometer
• (D)  None of these

Answer

Submitted By :Ali Uppal

Naphthenic acid is a/an ______________ compound?

• (A)  Sulphur
• (B)  Nitrogen
• (C)  Oxygen
• (D)  None of these

Answer

Submitted By :Ali Uppal

LPG when brought to atmospheric pressure & temperature will be a________________?

• (A)  Liquid lighter than water
• (B)  Liquid heavier than water
• (C)  Gas lighter than air
• (D)  Gas heavier than air

Answer

Submitted By :Ali Uppal