Match the columns. 1 . Expansion in length a. evaporation 2 . Water to water vapour at 100 ° C b. superficial expansion 3 . Expansion in volume c. linear expansion 4 . Expansion in area d. boiling 5 . Water to water vapour at 25 ° C e. cubical expansion f. sublimation

Any expansion or increase in length of a solid on heating is known as linear expansion. It depends on the nature of the material, original length, temperature, etc. The process in which a liquid gets converted into steam at a fixed temperature is known as boiling. Conversion of water to water vapour at 100 ° C also involves the boiling process. An expansion in the volume of a solid, liquid or gas is known as cubical expansion. Liquids and gases undergo only this kind of expansion. A thermal expansion in which, the area of a solid increases on heating is known as superficial expansion. Evaporation is the process in which a liquid changes into its vapour state at any temperature below its boiling point. Thus, conversion of water to water vapour at 25 ° C possible by evaporation. 1 . Expansion in length c. linear expansion 2 . Water to water vapour at 100 ° C d. boiling 3 . Expansion in volume e. cubical expansion 4 . Expansion in area b. superficial expansion 5 . Water to water vapour at 25 ° C a. evaporation

E M B I B E

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q B

EASY

8th ICSE

IMPORTANT

Earn 100

Evaporation occurs only at the of a liquid.

41.67% studentsanswered this correctly

Important Questions on Heat Transfer

EASY

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q B

Expansion in _____ of a solid on heating is called superficial expansion.

EASY

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q B

The process of _____ occurs at the boiling point of a liquid.

EASY

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q B

Which process is called as boiling?

MEDIUM

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q B

Brass expands _____ (less/ more/ slower) than steel.

EASY

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q B

_____ expand more than liquids.

MEDIUM

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q B

A

20 m

steel rod expands _____(less/ more) than a

80 m

steel rod, when heated to

500 ℃

for

10

minutes.

MEDIUM

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q B

The density of water is maximum at _____

° C

.

HARD

8th ICSE

IMPORTANT

Living Science Physics 8>Chapter 6 - Heat Transfer>Exercises>Q C

Match the columns.

$1$ . Expansion in length	a. evaporation
$2$ . Water to water vapour at $100 ° C$	b. superficial expansion
$3$ . Expansion in volume	c. linear expansion
$4$ . Expansion in area	d. boiling
$5$ . Water to water vapour at $25 ° C$	e. cubical expansion
	f. sublimation

Learn and Prepare for any exam you want !

|

|

|

|

|

|

|

|