Petroleum Refinery Engineering MCQs

Question 1

Reid vapour pressure of gasoline is the measure of its

Accepted Answer

Vapour locking tendency

Answer

Pour point

Answer

Cloud point

Answer

Carbon residue

Question 2

Which of the following is the most widely used cracking process in oil refineries?

Accepted Answer

Fluidised bed catalytic cracking process

Answer

Dubbs process

Answer

T.C.C. moving bed process

Answer

Houdry's fixed bed process

Question 3

Raw Kerosene has a smoke point of 15 mm. After it is subjected to dearomatisation by liquid SO 2 extraction (Edeleanu process), its smoke point may become __________ mm.

Accepted Answer

25

Answer

5

Answer

10

Answer

100

Question 4

Which of the following has the lowest viscosity (at a given temperature) of all?

Accepted Answer

Naphtha

Answer

Kerosene

Answer

Diesel

Answer

Lube oil

Question 5

Hydrocracking employs

Accepted Answer

High pressure & temperature

Answer

Low pressure & temperature

Answer

High pressure and low temperature

Answer

High temperature and low pressure

Question 6

H/C ratio (by weight) for the same number of carbon atoms is the highest in case of

Accepted Answer

Naphthenes

Answer

Aromatics

Answer

Paraffins

Answer

Olefins

Question 7

Pick out the wrong statement.

Accepted Answer

Higher temperature is employed in visbreaking than in thermal cracking

Answer

Pyrolysis is a mild thermal cracking process

Answer

Lead suceptibility of petrol produced by catalytic process is more than that produced by thermal cracking

Answer

Operating pressure and temperature in thermal cracking process is more than that in catalytic cracking process

Question 8

Straight run petrol as compared to methyl/ethyl alcohol has

Accepted Answer

Lower octane number

Answer

Lower calorific value

Answer

Higher specific gravity

Answer

Higher ignition temperature

Question 9

The colour of gasoline is an indication of its

Accepted Answer

Gum forming tendency & thoroughness of refining

Answer

Octane number

Answer

Lead susceptibility

Answer

None of these