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Fibre to Fabric — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceFibre to Fabric1 Mark
Question
Why are cotton and woollen clothes rough while silk and nylon clothes smooth to touch?
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Answer

Cotton and woollen clothes are rough because they have many folds and uneven surfaces but silk and nylon have long, plain and fine structure.

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