by which material artificial silk is formed. why artificial has become more popular than natural silk??

Explanation:

Frequently, "artificial silk" is just a synonym for rayon. When made out of bamboo viscose it is also sometimes called bamboo silk.

Artificial silk is cheaper than silk.

It can be dyed in a variety of colours.

It can be used to make bed sheets on mixing with cotton, and on mixing with wool can be used to make carpets.

That's y artificial silk has become more popular than natural silk.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.