Petroleum Refinery Engineering MCQs

Question 1

Molecular weight of crude oil is in the range of

Accepted Answer

230-250

Answer

100-120

Answer

450-550

Answer

600-850

Question 2

The best method of determining sulphur in crude oil is by the __________ method.

Accepted Answer

Bomb calorimeter

Answer

Kjeldah

Answer

Duma

Answer

Junkar's calorimeter

Question 3

Deoiling is the process of removal of oil from wax. It is done by the __________ process.

Accepted Answer

All of the above

Answer

Solvent extraction

Answer

Sweating

Answer

Resettling

Question 4

__________ base crude oil is also called asphaltic crude.

Accepted Answer

Naphthenic

Answer

Paraffinic

Answer

Mixed

Answer

Aromatic

Question 5

A multigrade lubricating oil means an oil having high

Accepted Answer

Viscosity index

Answer

Viscosity

Answer

Aniline point

Answer

Flash point

Question 6

Hydrofining is the most recent and effective method for the

Accepted Answer

Removal of sulphur

Answer

Improvement of smoke point

Answer

Reduction of breathing loss

Answer

Improvement of viscosity index

Question 7

Maximum sulphur percentage in low sulphur heavy stock (LSHS) furnace oil is about

Accepted Answer

1

Answer

0.1

Answer

2.5

Answer

3.5

Question 8

Extractor temperature is maintained at -20°C in Edeleanu process to reduce the __________ of kerosene.

Accepted Answer

Paraffins

Answer

Smoke point

Answer

Aromatics

Answer

Naphthenes

Question 9

Older crude petroleum

Accepted Answer

Gives more distillates

Answer

Is light and better

Answer

Gives less tar

Answer

All of the above