Which amongst the following does not contain air in it?

A glass of water

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A deflated ballon

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A sponge doll

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An empty jar

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Solution

The correct option is B A deflated ballon
Water contains dissolved air in it while a sponge has tiny pores which has air trapped in them. A jar, even if it is empty, will still contain air in it. However, when a balloon is deflated, all the air inside it is let out. So, a deflated balloon will not have air in it.

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