nature of matter and composition - Category wise Question and Answer Practice Test with Solutions

Question : 16

Salt can be obtained from sea water by

a) evaporation

b) decantation

c) filtration

d) sublimation

Question : 17

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 : 18

The compound used as 'artificial sweetener' is

a) citric acid

b) Saccharine

c) Tartaric acid

d) octane

Question : 19

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 : 20 [CDS]

Iodised salt is a

a) compound formed by combination of potassium iodide and common salt

b) mixture of potassium iodide and common salt

c) mixture of molecular iodide and common salt

d) compound formed by molecular iodine and common salt