Question

1. The molecular formula of oxide of iron formed on passing steam over hot iron is
2. In detergents, ............ function group is joined with hydrocarbon.
3. By using artificial selection, farmers have obtained variety of cabbage having sterile
flowers and are cultivated as
4. The process of continuous beating of heart is controlled by

Answer 1

I dont know sorry hope someone answers

Answer 2

Answer:

2. Carboxylic acid

i hope this helps u.

thanks