Chemical Process MCQs

Question 1

In the production of soda ash by Solvay process, the by-product is

Accepted Answer

CaCl2

Answer

NH4Cl

Answer

NH3

Answer

NaOH

Question 2

Use of water having dissolved oxygen in boilers promotes

Accepted Answer

Corrosion

Answer

Sequestration

Answer

Scale formation

Answer

None of these

Question 3

Chrome tanning and vegetable tanning are done for

Accepted Answer

Light & heavy leather respectively

Answer

Heavy & light leather respectively

Answer

Both light & heavy leather

Answer

Neither light nor heavy leather

Question 4

Refractory bricks burnt at very high temperature have got

Accepted Answer

Greater resistance to corrosion by slags

Answer

Less resistance to corrosion by slags

Answer

High spalling tendency

Answer

None of these

Question 5

Viscose rayon . . . . . . . .

Accepted Answer

Utilises H2SO4, NaOH and CS2 during its manufacture

Answer

Cannot be made from sulphite pulp

Answer

Cannot yield textile grade fibre

Answer

None of these

Question 6

Viscose rayon is

Accepted Answer

None of these

Answer

Cellulose nitrate

Answer

Regenerated cellulose nitrate

Answer

Regenerated cellulose acetate

Question 7

Viscose rayon is chemically

Accepted Answer

Regenerated cellulose acetate

Answer

Cellulose nitrate

Answer

Regenerated cellulose nitrate

Answer

Cellulose acetate

Question 8

Vulcanisation of rubber

Accepted Answer

Converts its plasticity into elasticity

Answer

Decreases its tensile strength

Answer

Increases its ozone & oxygen reactivity

Answer

Increases its oil & solvent resistance

Question 9

The biochemical treatment applied to sewage effluents is a process of

Accepted Answer

Oxidation

Answer

Dehydration

Answer

Reduction

Answer

Polymerisation