Science Standard 9>Chapter 7 - Heat>textbook exercises>Q iv

EASY

9th Tamil Nadu Board

IMPORTANT

Earn 100

Define specific latent heat capacity.

Important Questions on Heat

EASY

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 7 - Heat>textbook exercises>Q v

Explain convection in daily life.

MEDIUM

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 7 - Heat>textbook exercises>Q v

What are the changes in state of water? Explain.

MEDIUM

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 7 - Heat>textbook exercises>Q v

How can you experimentally prove water is a bad conductor of heat? How is it possible to heat water easily while cooking?

EASY

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 7 - Heat>textbook exercises>Q vi

What is the heat in joules required to raise the temperature of

25

grams of water from

0 ° C

to

100 ° C

? What is the heat in Calories? (Specific heat of water

= 4.18 \frac{J}{g ° C}

)

MEDIUM

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 7 - Heat>textbook exercises>Q vi

What could be the final temperature (in

° C

) of a mixture of

100 g

of water at

90 ° C

and

600 g

of water at

20 ° C

?

MEDIUM

9th Tamil Nadu Board

IMPORTANT

Science Standard 9>Chapter 7 - Heat>textbook exercises>Q vi

How much heat energy (in joules) is required to change

2 kg

of ice at

0 ° C

into water at

20 ° C

?
(Specific latent heat of fusion of water

= 334000 J {kg}^{- 1}

, Specific heat capacity of water

= 4200 J {Kg}^{- 1} K^{- 1}

)