Question

Rohan was performing an activity to test the burning properties of cotton, wool and silk in his science laboratory. He held one end of the cotton yarn with a tong and brought the other end over the flame of a candle. He then performed the same activity with different yarns and observed carefully. Which of the following observations is/are correct? 1.Cotton yarn does not catch fire easily. It does not shrink or melt on burning. It gives the odour of burning hair on heating 2. Wool yarn catches fire easily. It shrinks and melt on burning. It gives the odour of burning paper on heating. 3. Silk yarn does not catch fire easily. It shrinks away from the flame but does not melt. It gives the odour of charred meat on heating.​

Answer 1

Answer:

Statement no.1 is correct.

Explanation:

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