Question

Give reason why:
(i) Rayon is called as artificial silk. (ii) Melamine is used to coat the uniform of fire- fighters.​

Answer 1

Answer:

i) Rayon is known as artificial silk as this fibre resembles silk in properties. It is obtained by chemical treatment of wood pulp of cotton.

ii). Melamine is a fire retardant plastic, which resist the spread of fire. It is used in the uniform of fireman for the protection of human body form heat hazards. It is also use in airplanes, buses etc. to prevent the spread of fire.

Explanation:

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Answer 2

Answer:

i.Rayon is known as artificial silk as this fibre resembles silk in properties. It is obtained by chemical treatment of wood pulp of cotton.

ii. Melamine is a fire retardant plastic, which resist the spread of fire. It is used in the uniform of fireman for the protection of human body form heat hazards. It is also use in airplanes, buses etc. to prevent the spread of fire

Explanation:

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