Question

in a toy telephone try to use different types of thread like wool, cotton and
nylon (keeping the length same). Write the observation
in each case and at the end write conclusion.
please give me this answer​

Answer 1

Explanation:

Ans. Some fabrics do not occur in the nature are hence called synthetic fibres.

2. Rayon is different from synthetic fibres because:

• It has a silk like appearance.

• It is obtained from wood pulp.

• Its fibres can also be woven like those of natural fibres.

• It is obtained from wood pulp.

Ans. It is obtained from wood pulp

3. Fill in the blanks with appropriate word:

a) Synthetic fibres are also called man-made or artificial fibres.

b) Synthetic fibres are synthesized from raw-materials called petrochemicals