Once Deepika bought some fabrics from a tailor shop to study she found one of them was shrinking when it was burnt with a candle The Other did not shrink on burning can you help her to find out which of the two was a cotton and which a synthetic fibre
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Explanation:
the one which got burnt is the cotton fabric because cotton shrinks due to burning and the 2nd fabric is silk fabric because silk does not shrink due to burning
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The synthetic fibre shrink when it is bond. On the other hand the cotton fibre did not shrink when it was burnt.
Explanation:
- the artificial fibres of the synthetic fibres are usually produced at high temperature and pressure. As a result of this when they are burnt they increase in length due to distortion and decrease in kinetic energy of the molecules of the synthetic fibre.
- However the natural fibre of the cotton fibre do not shrink because there is no change in the kinetic energy.
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