Punjab 9th Physics Ch 7 Thermal Properties of Matter Online Test Mcqs

Punjab Physics 9th Class: Chapter 7

Understand heat and temperature concepts in Chapter 7: Thermal Properties of Matter with our Punjab Board 9th Class Physics practice resources (New Syllabus 2025-26). This chapter covers kinetic molecular theory, temperature scales, thermometers, specific heat capacity, latent heat, thermal expansion, and phase changes. Our New Pattern MCQs Online Test includes conceptual questions on heat transfer, thermometer working, and thermal expansion applications. The Short Questions with Answers section provides detailed explanations of thermal concepts with formulas, conversions, and real-life examples. Practice chapter-wise to master thermal physics fundamentals and achieve excellent results in Punjab Board Physics examinations with confidence.

Punjab 9th Physics Ch 7 Thermal Properties of Matter Test Online Mcqs (New Syllabus)

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1. Which thermometer is most suitable for recording rapidly varying temperature?

Alcohol-in-glass thermometer

Mercury-in-glass clinical thermometer

Mercury-in-glass laboratory thermometer

Thermocouple thermometer

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2. What type of motion is of the molecules in a gas?

Linear motion

Rotatory motion

Random motion

Vibratory motion

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3. In Kelvin scale, the temperature corresponding to melting point of ice is:

+273

-273

zero

32

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4. When an ideal gas is expanded keeping its temperature constant, its internal energy:

Cannot be determined

Decreases

Remains the same

Increases

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5. Temperature of substance is:

the total amount of heat contained in it

degree of hotness or coldness

the total number of molecules in it

dependent upon the intermolecular distance

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6. How many phases of matter are there?

1

3

2

4

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7. Which of the following can increase the sensitivity of liquid in glass thermometer?

Changes colour on temperature

Use a longer capillary tube

Using long specific its

Use a bigger bulb which contains more amount of liquids

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8. Which Statement describes the particles structure of gases?

Particles have fixed positions and low kinetic energy

particles have moderate kinetic energy and move randomly

particles are arranged in a repeating pattern

particles are tightly packed and have strong bonds

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9. Which of the following is not a form of internal energy?

Chemical energy of the bonds between the particles

Potential energy of the particles

Light energy

Kinetic energy of the particles

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10. What happens to the arrangement of particles when a solid is heated and turns into a liquid?

Particles become more closely packed

Particles change their state from solid to gas

Particles start vibrating in fixed positions

Particles move farther apart

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11. Thermometer, which is most suitable for measuring rapid changing temperatures, is:

Constant volume gas thermometer

Liquid in glass thermometer

Resistance thermometer

Thermocouple

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12. Gases and liquids are categorized as:

Solids

Liquids

Gases

Fluids

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13. Heat is the:

the energy in transit

total kinetic energy of the molecules

work done by the molecules

the internal energy

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14. How do the molecules in a solid behave?

Move randomly

Rotate and vibrate randomly at their own positions

Move in a straight line from hot to cold ends

Vibrate about their mean position

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15. Mercury has uniform linear expansion in liquid in glass thermometers. A liquid in glass thermometer has a mercury level of 2cm at melting point of ice and a mercury level of 6cm at boiling point of water. What is the distance between every 1°C division on Celsius scale of thermometer?

0.06cm

0.08cm

1.00cm

0.04cm

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16. Which thermometer uses voltage to measure temperature of a hot body?

Thermocouple

Resistance thermometer

Liquid in glass thermometer

Gas thermometer

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17. In which of the materials, particles have only vibrational motion?

Plasma

Solid

Liquids

Gas

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18. Which state of matter has particles that are highly compressible and can fill any container?

Gas

Plasma

Solid

Liquid

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19. The temperature which has the same value on Celsius and Fahrenheit scale is:

-40

+45

-45

+40

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20. Which one is a better choice for a liquid-in-glass thermometer is that:

Wets glass

Is a bad conductor

Is colourless

Expand linearly

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21. One disadvantage of using alcohol in a liquid-in-glass thermometer:

its expansion is linear

it wets the glass tube

it has low freezing point (-112°C)

it has large expansivity

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22. Water is not used as a thermometric liquid mainly due to:

a low boiling point (100°C)

colourless

a bad conductor of heat

non-linear expansion

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23. A thermometer has a narrow capillary tube so that it:

quickly responds to temperature changes

can read the maximum temperature

gives a large change for a given temperature rise

can measure a large range of temperature

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Ch 7 Thermal Properties of Matter Short Questions