## Multiple Choice Questions

Chapter 8 – Thermal Properties of Matter

## Long Questions

Chapter 8 – Thermal Properties of Matter

## Short Questions

Chapter 8 – Thermal Properties of Matter

## Exercise Questions

Chapter 8 – Thermal Properties of Matter

## Exercise Numerical

Chapter 8 – Thermal Properties of Matter

## Chapter 8 – Thermal Properties of Matter

Which of the following substances have greater average kinetic energy of its molecules at 10oC?

(a) Steel                      (b) copper                   (c) Water                                (d) Mercury

Ans.    Copper

Every thermometer makes use of some property of a material that varies with temperature. Name the property used in:

• Strip thermometers
• Mercury thermometers

Ans.    (a) In strip thermometers, colour variation is used.

(b) Uniform thermal expansion of liquids is used in mercury thermometer.

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How specific heat differs from heat capacity?

Ans.

 Specific Heat Heat capacity ·       Specific heat of a substance is the amount of heat required to raise the temperature of 1 kg mass of that substance through 1K. ·       Its unit is Jkg–1K–1 ·       Heat capacity of a body is the quantity of thermal energy absorbed by it for one Kelvin (1 K) increase in its temperature. ·       Its unit is JK–1.

Give two uses of cooling effect by evaporation.

Ans.    i. Evaporation of perspiration helps to cool our body.

ii. In refrigerator evaporation of liquefied gas produces to cooling.

How evaporation differs from vaporization?

Ans.

 Evaporation Vaporization Evaporation is the changing of a liquid into vapours (gaseous state) from the surface of the liquid without heating it. The process in which liquid converts into gas at its boiling point is called vaporization.

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### This Post Has 13 Comments

1. libra doll

physics kai notes Gujranwala board kai lye bhi hai kya aur apne long questions kai num dye hai like bhi hue

2. Muneeb Ahmed

3. Abdullah mehmood

This is best online guide for physics only in question answer same words are used as a book so please add new words that enhance the beauty of answer and procedure for solving numerical is best of all.

4. Ahmed

This website is very helpful for student of physics

5. Rania

6. Hamza Mahboob

Where are short questions

7. M.Saim Faisal

This is a great place for accurate and to the point answers for board exams
Thank you vey much

8. Emmy buttler

A nice effort really thanksss 🥰

9. Naveera zarri

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10. naveera

i shared this link with all my friends cz its so helpful …

11. naveera

1st mcq is wrong all the bodies do not expands uniformly on heating

1. Organizer

ok, we’ll check it.