Chemical Process MCQs

Question 1

In contact process, SO3 is absorbed in 97% H2SO4 and not in water, because

Accepted Answer

Water forms an acid mist, which is difficult to absorb

Answer

SO3 gas is sparingly soluble in water

Answer

The purity of acid is affected

Answer

Scale formation in the absorber is to be avoided

Question 2

99.5% purity oxygen is used in

Accepted Answer

All of the above

Answer

Cutting and welding by oxy-acetylene flame

Answer

Hospitals for medicinal purposes

Answer

Gas masks and artificial breathing apparatus

Question 3

Baking soda is chemically represented by

Accepted Answer

NaHCO3

Answer

Na2CO3

Answer

Na2CO3.H2O

Answer

Na2CO3.10H2O

Question 4

Washing soda is chemically represented by

Accepted Answer

Na2CO3.10H2O

Answer

Na2CO3

Answer

Na2CO3.H2O

Answer

NaHCO3

Question 5

Pick out the wrong statement.

Accepted Answer

Total sugar content in molasses is about 10%

Answer

Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively

Answer

Protein catalysts are called enzymes

Answer

The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes

Question 6

The basic difference between vegetable oils and fats is in their

Accepted Answer

Physical state

Answer

Density

Answer

Chemical properties

Answer

Composition

Question 7

Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

Accepted Answer

Oxides of nitrogen & V2O5 on a porous carrier

Answer

V2O5 & Cr2O3

Answer

Oxides of nitrogen & Cr2O3

Answer

V2O5 on a porous carrier & oxides of nitrogen

Question 8

Favourable conditions for the liquefaction of gases in general are

Accepted Answer

High pressure & low temperature

Answer

Low pressure & high temperature

Answer

High pressure & high temperature

Answer

Low pressure & low temperature

Question 9

Polycaprolactum is commercially known as

Accepted Answer

Nylon-6

Answer

Nylon-66

Answer

Dacron

Answer

Rayon