Question

burning cotton or cotton clothes smells like burning of paper, whereas burning wool/nylon smells like burning hair. give reasons

Answer 1

cotton and paper are made of cellulose thus they have similar smell
wool and hair are made of proteins thus they also have similar smell

Answer 2

Cotton is derived from cotton plant. plants contain cellulose. Paper is also made from the tree which contains cellulose . So it smells the same. Whereas wool is taken from fur of the sheep which contains the same proteins which is n our hair. So they smell the same . Nylon is also partially made of proteins and so it smells like burning hair.

Hope this helps you !!