MEDIUM
7th Chhattisgarh Board
IMPORTANT
Earn 100

The rate of expansion of mercury is almost the same at all temperatures, therefore it is used in .

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Important Questions on Heat and Temperature

MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 7 - Heat and Temperature>Questions for practice>Q 2
One calorie of heat is equal to _____ joule.
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 7 - Heat and Temperature>Questions for practice>Q 2
The boiling point of water is _____C∘
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 7 - Heat and Temperature>Questions for practice>Q 3
When boiling water is poured into a tumbler made up of thick glass, the tumbler cracks. Why?
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 7 - Heat and Temperature>Questions for practice>Q 3
In summers to keep the water cool, we keep it in pitchers made up of red soil and not in metal pitchers. Why?
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 7 - Heat and Temperature>Questions for practice>Q 3
The mercury in the thermometer rises up on getting hotter. Why?
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 7 - Heat and Temperature>Questions for practice>Q 3
While sweating, contact with air makes us feel cool. Why?
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 7 - Heat and Temperature>Questions for practice>Q 3
When a gas-filled balloon is brought near the fire, it bursts. Why?
MEDIUM
7th Chhattisgarh Board
IMPORTANT
Science & Technology Class - VII>Chapter 7 - Heat and Temperature>Questions for practice>Q 4
Write two uses of water expansion in daily life.