Physics
The substance which contracts on melting is :
- lead
- candle wax
- ice
- all of the above
Calorimetry
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Answer
ice
Reason — Most substances expand when they melt due to the increase in thermal energy causing the particles to move farther apart. However, water (in the form of ice) is a notable exception. Ice actually contracts when it melts, meaning its volume decreases. This is because the crystalline structure of ice is less dense than liquid water, causing it to occupy more space.
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