set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

What type of mixture is smoke?

a) Liquid mixed with a gas

b) Solid mixed with a gas

c) Gas mixed with a gas

d) Gas mixed with a liquid and a solid

Question : 2

Select the one that is not a chemical change ?

a) Dissolution of oxygen in water.

b) Dissolution of carbon dioxide in water.

c) Dissolution of ammonia in water.

d) None of these is a chemical change.

Question : 3

The process used to separate oil and water is

a) separating funnel

b) sublimation

c) distillation

d) chromatography

Question : 4

Nail polish remover contains

a) formaldehyde

b) acetone

c) benzene

d) acetic acid

Question : 5

Which chemical was an important symbol in our freedom struggle ?

a) Medicine

b) Glucose

c) Fertilizer

d) Sodium chloride

Question : 6

Boyle’s law states that the

a) volume is directly proportional to the temperature at constant pressure

b) pressure of a gas is directly proportional to the temperature at constant volume

c) pressure of a gas is inversely proportional the volume at constant temperature

d) None of the above