Chemical Process MCQs

Question 1

Low purity oxygen is used for

Accepted Answer

Chemical oxidation processes

Answer

L.D. steel making

Answer

Cutting and welding of metals

Answer

Medicinal purposes

Question 2

Which of the following is not a food additive?

Accepted Answer

Ammonium chloride

Answer

Citric acid

Answer

Invertage

Answer

Benzoyl peroxide

Question 3

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

Accepted Answer

Oxidation of Cl- ions

Answer

Oxidation of Na+ ions

Answer

Reduction of Na+ ions

Answer

Reduction of Cl- ions

Question 4

Which of the following sugars is the sweetest?

Accepted Answer

Fructose

Answer

Glucose

Answer

Sucrose

Answer

Lactose

Question 5

Concentration of sulphide ores is done usually by

Accepted Answer

Froth floatation

Answer

Roasting

Answer

Smelting

Answer

Electro magnetic separation

Question 6

Finely ground calcium aluminate & silicate is a/an

Accepted Answer

Cement

Answer

Cermet

Answer

Abrasive

Answer

Explosive

Question 7

Tall oil obtained as a by-product from the black liquor recovery is

Accepted Answer

All of the above

Answer

A black, sticky & viscous liquid

Answer

Used in the manufacture of greases, emulsions & soaps

Answer

Composed mainly of rosin & fatty acids

Question 8

Main use of hydrazine is

Accepted Answer

As a rocket fuel

Answer

In water treatment

Answer

As a disinfectant

Answer

As fire retardant

Question 9

In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :

Accepted Answer

Furnace → converter → absorber

Answer

Furnace → evaporator → absorber

Answer

Furnace → converter → evaporator

Answer

Converter → furnace → absorber