set 3 MCQ Questions & Answers Detailed Explanation

Question : 1

Physical properties of a mixture

a) depend on the organization of the substance

b) depend on the volume of the substance

c) vary with the amount of substance.

d) vary depending upon its components

Question : 2

The compound used as 'artificial sweetener' is

a) citric acid

b) Saccharine

c) Tartaric acid

d) octane

Question : 3

Air is regarded as a mixture because

a) its volume changes under different conditions

b) its temperature may change

c) its pressure may very

d) its composition may vary

Question : 4

When dispersed phase is liquid and dispersion medium is gas then the colloidal system is called

a) jellies

b) clouds

c) smoke

d) emulsions

Question : 5

Brass is an example of

a) homogeneous mixture

b) element

c) compound

d) heterogeneous mixture

Question : 6

Wooden pencil used for writing contains

a) Salt

b) Graphite

c) Lead

d) Cane sugar