Question

Reshma and her mother went to as hop to buy a shawl to keep them warm during winter.the shopkeeper gave her an expensive one that looked very attractive and told her that it was pure wool. After coming home, reshma took a small thread from it and tested it by burning. Immediately she realised that they were cheated an the shawl was not pure wool.

Answer 1

So what we have to tell plz mention it.....

Answer 2

Explanation:

The wool can be tested by burning as it differs from the artificial wool in the manner of burning. Characteristics are

• Nature of burning: It burns slowly, doesn’t catch fire. It curls slowly away from the flame. It doesn’t stay in flame after it is removed from the flame.
• Nature of smoke: Very little or no smoke is produced after burning, unlike artificial wools.

The smell of burning wool – burning wool smells like burning hair, as both are made of keratin.

• Nature of ash: The ash produced is gritty, dark and bead like.