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

Solid

Liquid

Plasma

Gas

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2. Temperature of substance is:

the total number of molecules in it

degree of hotness or coldness

dependent upon the intermolecular distance

the total amount of heat contained in it

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

Random motion

Linear motion

Rotatory motion

Vibratory motion

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

can read the maximum temperature

can measure a large range of temperature

quickly responds to temperature changes

gives a large change for a given temperature rise

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

Use a longer capillary tube

Use a bigger bulb which contains more amount of liquids

Changes colour on temperature

Using long specific its

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

Chemical energy of the bonds between the particles

Potential energy of the particles

Kinetic energy of the particles

Light energy

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

it wets the glass tube

its expansion is linear

it has low freezing point (-112°C)

it has large expansivity

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8. Heat is the:

total kinetic energy of the molecules

the energy in transit

the internal energy

work done by the molecules

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

Resistance thermometer

Gas thermometer

Thermocouple

Liquid in glass thermometer

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

Cannot be determined

Increases

Decreases

Remains the same

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

+45

+40

-45

-40

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12. 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?

0.04cm

1.00cm

0.08cm

0.06cm

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

Expand linearly

Wets glass

Is a bad conductor

Is colourless

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

Gas

Plasma

Solid

Liquids

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15. Gases and liquids are categorized as:

Solids

Gases

Fluids

Liquids

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

Resistance thermometer

Thermocouple

Constant volume gas thermometer

Liquid in glass thermometer

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

zero

-273

32

+273

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18. How do the molecules in a solid behave?

Move randomly

Move in a straight line from hot to cold ends

Rotate and vibrate randomly at their own positions

Vibrate about their mean position

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19. How many phases of matter are there?

1

3

4

2

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

Alcohol-in-glass thermometer

Mercury-in-glass laboratory thermometer

Mercury-in-glass clinical thermometer

Thermocouple thermometer

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21. Which Statement describes the particles structure of gases?

particles are tightly packed and have strong bonds

particles are arranged in a repeating pattern

Particles have fixed positions and low kinetic energy

particles have moderate kinetic energy and move randomly

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

non-linear expansion

a low boiling point (100°C)

colourless

a bad conductor of heat

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

Particles start vibrating in fixed positions

Particles become more closely packed

Particles change their state from solid to gas

Particles move farther apart

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Ch 7 Thermal Properties of Matter Short Questions