(a) Give the common and IUPAC name of the monomer of natural rubber.
(b) How is high density polythene obtained? What structural difference it has from low density polythene?
(c) Name a copolymer which is used for making non- breakable plastic crockery?
(d) Write the names and give the structures of the monomers of Nylon-6,6.

Write the names and structures of the monomers of the polymers (i) Nylon-6, 6 (ii) Polythene

(a) What are polymers? (b) Name the monomers of polythene, teflon and nylon- 6,6.

Write the names and structures of the monomers of the following polymers : (i) Bakelite (ii) Nylon-6 (iii) Polythene

Once there was a heavy downpour for about three hours in the early morning. Irfan and his family were finding it difficult to carry out their morning chores as the sewer water was flowing back into the toilets, the road outside was flooded with water and they could not move out. On this serious problem, Irfan called a meeting of the residents and said that we are using too much polythene bags and other plastic items which we throw here and there, which finally move into the drains and sewer lines which get choked. As these are non-biodegradable, they remain as such for long time. So we should use bags made up of cloth and jute which are biodegradable. Answer the following questions : (i) Name a polymer which is biodegradable. Write the structure of its monomers and the repeating unit. (ii) Write two uses of this polymer. (iii) Write any two values shown by Irfan.

Write the structures of monomers used to obtain the following polymers: (a) Natural Rubber (b) PVC (c) Nylon- 6,6

(a) Write the names of the monomers of polymer used for making unbreakable crockery. (b) Write the reaction involved in the preparation of neoprene (c) Arrange the following polymers in decreasing order of intermolecular forces : PVC, Nylon 66, Natural rubber.