Chemical Process MCQs

Question 1

Which of the following, when pyrolysed, produces perchloro-ethylene?

Accepted Answer

Carbon tetrachloride

Answer

Ethylene dichloride

Answer

Chlorobenzene

Answer

Chlorinated paraffin

Question 2

Naphthalene is removed from coke oven gas by

Accepted Answer

Scrubbing with wash oil

Answer

Adsorbing on palladium

Answer

Absorbing in ethanolamine

Answer

Passing it through electrostatic precipitator

Question 3

Hydrophilic group of a soap or detergent solution is

Accepted Answer

Water loving

Answer

Water hating

Answer

Soil loving

Answer

None of these

Question 4

__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.

Accepted Answer

Chlorine

Answer

Ammonium chloride

Answer

Sodium carbonate

Answer

Sodium bi-carbonate

Question 5

High temperature carbonisation of coal takes place at __________ °C.

Accepted Answer

1100

Answer

2000

Answer

700

Answer

< 500

Question 6

Low temperature carbonisation of coal takes place at __________ °C.

Accepted Answer

700

Answer

300

Answer

1100

Answer

900

Question 7

Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.

Accepted Answer

60-70

Answer

25

Answer

150-200

Answer

250-300

Question 8

Comparing sulphate process with sulphite process, we find that __________ in the later.

Accepted Answer

Both temperature & pressure in the former is more than that

Answer

Both temperature & pressure in the former is less than that

Answer

Temperature is more in the former whereas pressure is more

Answer

Pressure is more in the former whereas temperature is less

Question 9

Which of the following coals has the highest calorific value?

Accepted Answer

Anthracite

Answer

Lignite

Answer

Sub-bituminous

Answer

Peat