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प्रश्न
Why does a lump of cotton wool shrink in water?
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उत्तर
A lump of cotton wool shrinks when immersed in water. This is because air present in the cotton wool escapes. Thus, the volume of the cotton wool decreases.
संबंधित प्रश्न
A fuel when used releases least amount of pollutants in the air.
Write ‘True’ or ‘False’ in front of following statement.
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- Name another component which if present in air as a pollutant would have given a similar observation
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