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प्रश्न
Paheli had bought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She 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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उत्तर
On immersing in hot water, the metal cap expands in size hence it can be removed easily.
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