Polymer

Statement I: ...

Question

Statement I: A thread made of cotton is stronger than the identical thread made of nylon.
Statement II: Acrylic fibres are also known as artificial wool.
Statement III: Rayon is an example of semi-synthetic fibre.

Which of the given statements is/are correct?

Only I

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II and III

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I and III

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Only III

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Solution

The correct option is B II and III
A thread made of nylon could be stronger than identical thread made of steel.
It is always stronger in terms of sustaining load than that of thread made of cotton.

Due to its texture similar to wool, acrylic fibres are also known as artificial wool. Semi-synthetic fibres are named so because these are made from raw materials that are modified synthetically. Rayon is an example of a semi-synthetic fibre made up of cellulose that can be obtained easily from wood pulp.

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	column I		Column II
(a)	A fibre obtained by chemical treatment of wood pulp	(i)	Melamine
(b)	A fibre stronger than steel wire	(ii)	Acrylic
(c)	A fibre known as artificial wool	(iii)	Rayon
(d)	A fire-proof plastic	(iv)	Nylon

Statement I:- Synthetic fibres have the advantage over the natural fibres that they are wrinkle-free.

Statement II:- Synthetic fibres are more costly than natural fibres.

Statement III:- Synthetic fibres dry faster as compared to natural fibres.

Which of the following statement(s) is/are true?

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