Petroleum Refinery Engineering MCQs

Question 1

Choose the correct statement.

Accepted Answer

Coking tendency increases with increasing molecular weight

Answer

Coking tendency decreases with increasing molecular weight

Answer

Higher pressure enhances coke formation

Answer

Coking is an exothermic reaction

Question 2

Catalyst used in the isomerisation is

Accepted Answer

Aluminium chloride

Answer

Alumina

Answer

Nickel

Answer

Phosphoric acid

Question 3

Lane and Garton classification of petroleum is based on its

Accepted Answer

Specific gravity

Answer

Composition

Answer

Optical properties

Answer

Viscosity

Question 4

Which of the following has the highest octane number?

Accepted Answer

Aromatics

Answer

I-paraffins

Answer

Naphthenes

Answer

Olefins

Question 5

Octane number of n-heptane is assumed to be

Accepted Answer

0

Answer

100

Answer

70

Answer

∞

Question 6

Stabilisation of gasoline (petrol) means

Accepted Answer

Removal of dissolved gases from it

Answer

Increasing its oxidation stability

Answer

Improving its lead susceptibility

Answer

Increasing its vapour pressure

Question 7

Though increased pressure has a retarding effect on cracking reaction, yet in actual process, a positive pressure of 10 - 15 kgf/cm 2 is maintained during cracking mainly to

Accepted Answer

Suppress coke formation

Answer

Increase the yield of light distillates

Answer

Enhance the octane number of gasoline

Answer

Reduce gum content in gasoline

Question 8

Road grade bitumen is produced from vacuum residue by its

Accepted Answer

Steam reforming

Answer

Aeration

Answer

Pyrolysis

Answer

Hydrogenation

Question 9

Name the hydrocarbon having the poorest oxidation stability.

Accepted Answer

Olefin

Answer

Naphthene

Answer

Paraffin

Answer

Aromatics