Ch 2

1

When temperature of a gas increases, pressure increases because:

A Mass increases B Collisions increase C Volume decreases D Density decreases

2

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

3

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

4

Evaporation is faster on a:

A Cold day B Humid day C Windy day D Cloudy day

5

Latent heat is the heat required to:

A Raise temperature B Change state without temperature change C Increase pressure D Expand volume

6

Latent heat of fusion is related to:

A Solid to gas B Liquid to gas C Solid to liquid D Gas to liquid

7

Evaporation causes cooling because:

A Temperature increases B High energy molecules escape C Pressure increases D Density increases

8

Which has higher latent heat of vaporization?

A Water B Alcohol C Petrol D Mercury

9

Thermal expansion occurs due to:

A Decrease in mass B Increase in density C Increase in kinetic energy of particles D Change in color

10

Which factor increases the rate of evaporation?

A Low temperature B High humidity C Large surface area D Low wind speed

11

Latent heat depends on:

A Mass only B Material only C Mass and material D Temperature only

12

The expansion in length of a solid is called:

A Area expansion B Volume expansion C Linear expansion D Thermal strain

13

Which state of matter has the strongest intermolecular forces?

A Gas B Liquid C Solid D Plasma

14

At constant volume, pressure of a gas is directly proportional to:

A Mass B Density C Temperature D Area

15

The SI unit of latent heat is:

A Joule B Joule per kelvin C Joule per kilogram D Watt

16

Which state of matter is most compressible?

A Solid B Liquid C Gas D Plasma

17

Which material can act as a superconductor?

A Copper B Iron C Lead D Wood

18

Coefficient of linear expansion depends on:

A Shape of object B Size of object C Material of object D Mass of object

19

Which law explains pressure-temperature relationship at constant volume?

A Boyle’s law B Charles’ law C Gay-Lussac’s law D Avogadro’s law

20

Pressure of gas decreases if:

A Temperature increases B Volume decreases C Volume increases D Collisions increase

21

Superconductivity was first discovered in:

A Copper B Iron C Mercury D Silver

22

Gas pressure is due to:

A Weight of gas B Collisions of gas particles C Volume of gas D Temperature only

23

Which quantity remains constant during thermal expansion?

A Volume B Mass C Length D Density

24

If temperature of gas is doubled at constant volume, pressure will:

A Become half B Remain same C Double D Become zero

25

Anomalous expansion of water occurs between:

A 0°C to 4°C B 4°C to 10°C C 0°C to 10°C D 10°C to 20°C