Chemical Process MCQs

Question 1

The gasification reaction represented by, C + H 2 O = CO + H 2 , is a/an __________ reaction.

Accepted Answer

Endothermic

Answer

Exothermic

Answer

Catalytic

Answer

Autocatalytic

Question 2

Roasting of metallurgical ores is done mainly to

Accepted Answer

Remove arsenic & sulphur

Answer

Dehydrate it

Answer

Sinter the ore

Answer

Remove CO 2 & H 2 O

Question 3

The purpose of adding Na 2 CO 3 to water of low alkalinity is to

Accepted Answer

Permit the use of alum as a coagulant

Answer

Increase the softening capacity of zeolite

Answer

Facilitate easy regeneration of zeolite

Answer

All of the above

Question 4

Which of the following contains least amount of N 2 ?

Accepted Answer

Coke oven gas

Answer

Blast furnace gas

Answer

Producer gas

Answer

Water gas (blue gas)

Question 5

Molecular weights of polymers are in the range of

Accepted Answer

10 2 - 10 7

Answer

10 - 10 3

Answer

10 7 - 10 9

Answer

10 9 - 10 11

Question 6

Pick out the wrong statement.

Accepted Answer

Red color is imparted to glass by addition of arsenic oxide

Answer

Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate

Answer

Glass is decolorised during its manufac-ture by adding antimony oxide, mangnese dioxide or arsenic oxide

Answer

Ordinary glass is represented chemically by Na 2 O.CaO.6SiO 2

Question 7

Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene?

Accepted Answer

AgO

Answer

Al 2 O 3

Answer

ZnCl 2

Answer

FE 2 O 3

Question 8

Washing soda is chemically represented by

Accepted Answer

Na 2 CO 3 .10H 2 O

Answer

Na 2 CO 3

Answer

Na 2 CO 3 .H 2 O

Answer

NaHCO 3

Question 9

Absorption of SO 3 in 97% H 2 SO 4 is

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Not possible

Answer

None of these