Q.4 (a) Collect pieces of different kinds of paper. Find out which of these can be recycled.
(b) With the help of a lens look at the pieces of paper, you collected for the above question. Do you see any difference in the material of recycled paper and a new sheet of paper?
(a) All kind of paper can be recycled except plastic.
(b) the recycled paper is thick and it's surface is rough.