paheli had bought a new bottle of pickle from the market. she tried to open the metel cap to taste it but could not do so. Then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. she could easily open the bottle now. Can you give the reason for this?
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because metal expands on heating and contracts on cooling that's why she easily open the metal cap after putting it into the hot water
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