Question

Take hair, wool, silk, paper, cotton thread, piece of plastic, thread of sweater,
piece of rope and carefully conduct a flame test. Based on smell and type
1.
of melting classify them as natural, artificial fibres. (EI)
​

Answer 1

Answer:

ExNatural fibres give the smell of burning hair upon burning, while the artificial fibres give the smell of the burning paper upon heating.  Natural fibres catch fire very early and melt down quickly, whereas artificial fibres burn slowly.

According to the flame test, materials can be classified as -

Artificial fibres: Paper, piece of plastic, the thread of sweater if synthetic and the piece of rope.

Natural fibres: Hair, wool, silk, cotton thread, the thread of sweater if wool

planation:

Answer 2

Answer:

1=a b=

Explanation:

hope this answer helps you