Matter in Our Surrounding

Matter in our surrounding Worksheet-1

1. According to ancient philosophers matter consists of:

A. three constituents                    B. four constituents

C. five constituents                       D. six constituents.

2. Which of the following statements is not correct?

A. Matter is continuous in nature.

B. Interparticle spaces are maximum in the gaseous state of a substance

C. Particles which constitute the matter follow a zig-zag path

Matter in our surrounding Worksheet-2

11. During evaporation, particles of a liquid change into vapours only:

A. from the surface

B. from the bulk

C. from both surface and bulk

D. neither from surface nor from bulk.

12. Rate of evaporation depends upon :

A. temperature

B. surface area

C. humidity

Matter in our surrounding Worksheet-3

21. The interparticle forces are the strongest in :

A. Ammonia                                  B. Ethyl alcohol

C. Carbon dioxide                        D. Sodium bromide

22. Evaporation of a liquid can take place :

A. at its boiling point                   B. below its boiling point

C. at all temperatures                 D. at a fixed temperature.