Petroleum Refinery Engineering MCQs

Question 1

Mercaptans are added to liquefied petroleum gas (LPG) to

Accepted Answer

Assist in checking its leakage from cylinder

Answer

Reduce its cost

Answer

Narrow down its explosion limit

Answer

Increase its calorific value

Question 2

High aniline point of diesel indicates that, it

Accepted Answer

Is highly paraffinic

Answer

Is highly aromatic

Answer

Has a large ignition delay

Answer

Has a low diesel index

Question 3

Smoke point of kerosene expresses its

Accepted Answer

Burning characteristics

Answer

Luminosity characteristics

Answer

Aromatic content directly

Answer

Lamp wick wetting characteristics

Question 4

Diesel index is defined as

Accepted Answer

(°API) × (Aniline Point, °F)/100

Answer

(°API) × (Aniline Point, °C)/100

Answer

(°API) × (100)/Aniline Point, °F

Answer

(°API) × (100)/Aniline Point, °C

Question 5

Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of

Accepted Answer

Coking

Answer

Thermal cracking

Answer

Gum formation

Answer

Discoloration

Question 6

Electrical desalting of crude oil removes the __________ impurities.

Accepted Answer

Oleophobic

Answer

Oleophilic

Answer

Both A & B

Answer

Neither A nor B

Question 7

With increase in density, the viscosity of petroleum products

Accepted Answer

Increases

Answer

Decreases

Answer

Remains same

Answer

Either A or B

Question 8

Aniline point of high speed diesel may be about __________ °C.

Accepted Answer

70

Answer

35

Answer

105

Answer

150

Question 9

A good lubricant should have high

Accepted Answer

Viscosity index

Answer

Volatility

Answer

Pour point

Answer

None of these