Ch 2

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Question 1 of 10 0% read

1. Which state of matter has the strongest intermolecular forces?

A Gas

B Liquid

C Solid

D Plasma

2. Gaps are left between railway tracks to:

A Reduce friction

B Save material

C Allow thermal expansion

D Increase strength

3. Which quantity remains constant during thermal expansion?

A Volume

B Mass

C Length

D Density

4. Evaporation is faster on a:

A Cold day

B Humid day

C Windy day

D Cloudy day

5. When gas particles strike the walls of container, they exert:

A Heat

B Force

C Energy

D Mass

6. Which phenomenon supports kinetic theory of matter?

A Reflection

B Brownian motion

C Refraction

D Diffraction

7. Which has higher latent heat of vaporization?

A Water

B Alcohol

C Petrol

D Mercury

8. According to the kinetic theory of matter, particles of matter are always in:

A Rest

B Circular motion

C Random motion

D Linear motion only

9. Evaporation causes cooling because:

A Temperature increases

B High energy molecules escape

C Pressure increases

D Density increases

10. In solids, particles are:

A Far apart and free

B Closely packed and vibrate about fixed positions

C Completely free to move

D Not moving at all

Ch 2

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