Chemical Process MCQs

Question 1

The main component of pyrex glass is

Accepted Answer

Lead

Answer

Zinc

Answer

Boron

Answer

Celenium

Question 2

Main constituent of limestone is

Accepted Answer

CaCO3

Answer

MgCO3

Answer

Na2CO3

Answer

CaSO4

Question 3

Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at

Accepted Answer

5 atm & 275°C

Answer

1 atm & 100°C

Answer

100 atm & 500°C

Answer

50 atm & 1000°C

Question 4

Catalyst used in the hydrogenation of oil is

Accepted Answer

Nickel

Answer

Platinum

Answer

Iron

Answer

Alumina

Question 5

In the Lurgi coal gasifier

Accepted Answer

Large quantity of coal can be processed

Answer

Coking coals cannot be used

Answer

Low carbon conversion efficiency is achieved

Answer

Entrainment of solids is higher

Question 6

Use of chlorine in the treatment of sewage

Accepted Answer

Aids in flocculation

Answer

Helps in grease separation

Answer

Increases the biological oxygen demand(BOD)

Answer

Causes bulking of activated sludge

Question 7

Bleaching of paper pulp is done with

Accepted Answer

Chlorine or chlorine dioxide

Answer

Activated clay

Answer

Bromine

Answer

Magnesium sulphite

Question 8

__________ is produced using polycondensation reaction.

Accepted Answer

Phenol formaldehyde

Answer

Polythene

Answer

Poly vinyl chloride

Answer

None of these

Question 9

Flux addition during smelting of ore is done to

Accepted Answer

Remove impurities/gangue

Answer

Enhance rate of reaction

Answer

Accelerate reduction of ore

Answer

Separate slag from metal