MEDIUM
7th Chhattisgarh Board
IMPORTANT
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Both the front surface of the doubled-layered glass bottle inside a thermos flask are painted with white shiny paint to prevent heat loss by .

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Important Questions on Transfer of Heat

MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 3
Write down the methods of heat transfer.
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 3
Write down two essential conditions for heat transfer by conduction.
EASY
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 3
Which materials are conductors of heat? Give any two examples.
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 3
Explain convection currents.
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 3
Solids cannot be heated by convection. Why? 
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 3
On what conditions does the heat emitted from hot bodies depend?
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 3
Desert areas are very hot in days and very cool at nights. Why?
EASY
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 8 - Transfer of Heat>Questions for practice>Q 3
Why are white coloured clothes preferred in summers?