Question

what are the merits and demerits of plastic

Answer 1

advantages
1. plastics are poor conductors of heat which makes them suitable for making handles of cooking vessels.
2. plastics are poor conductors of electricity .so they are used in electrical appliances
3. they are insoluble in water.
4. they do not corrode or rust.

Disadvantages
1.when plastics are burned,they produce toxic gases and smoke
2. most plastic wastes littering the roadsides cause disease causing microorganisms.
3. plastics dumped in water bodies pose a threat to aquatic life.
4. the toxic substances present in plastics which are dumped in water bodies can cause reproductive failure in aquatic organisms.

Answer 2

the merits are that is easy to produce and it is byproduct of petroleum refienery it is strong and durable and easy to give shape. the biggest demirt are that it is biodigradable which means it does not decay or it is no proper wayto dispose plastic other than recycling

hope it helps.