Question

nehabhabhi takes two type of fibER natural;synthetic. she does not know which one is nATURAL FIBER WHICH ACTIVITY YOU WILL SUGGEST TO IDENTIFY FIBRES

Answer 1

I will suggest her to burn a small piece of fabric of both categories to test whether it's a natural fibre or synthetic fibre.

• When natural fibres are burnt their ash crumbles on touching.
• While synthetic fibres show the characteristics of plastics on burning. As we must have observed that plastic when burnt do not turn into ash instead thry curl up.
• Therefore she can differentiate between natural and synthetic fibres by burning small pieces of each of them.

Answer 2

One of the activities to distinguish between natural fibres and synthetic fibres is -

• Burn a small piece of both kinds of fabrics separately.
• The natural fibre will burn giving a smell like that of burning hair.
• While synthetic fibres burn giving a burning paper-like smell.
• Also, synthetic fibres do not give ash on burning as in the case of natural fibres.
• Thus, on the basis of these properties, natural and synthetic fibres can be distinguished by Nehabhabhi