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Question

Read the following statement and mark the correct answer 

I. Artificially prepared synthetic fibre which resembles silk is known as terylene.
II. Rayon is not considered a synthetic fibre as it is regenerated from cellulose.

III. Bottles and jars are made up of PET. 


A
Statement I is false, II and III are true
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B
Statement I is true, II and III are false
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C
Statement I and II are false, III is true
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D
Statement II is true, I and II are false
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Solution

The correct option is A Statement I is false, II and III are true
1. Terylene is a synthetic polyester fibre whereas rayon is artificial silk
Thus, statement $$I$$ is false.
2. Rayon was the first manufactured fibre. It is made from wood pulp, a naturally occurring, cellulose-based raw material. But it requires chemical processing. So, rayon is neither considered a synthetic fibre nor a natural fibre. Instead, it is considered to be a semi-synthetic fibre. Thus, statement $$II$$ is true.
3. PET is used to made bottles and jars. Thus, statement $$III$$ is true.
Hence, the correct option is $$\text{A}$$

Chemistry

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