Q21 of 25 Page 3

Write some properties of plastic which make them as materials of choice

Some characteristic properties of plastic are i. plastic is non reactive and non corrosiveii. plastic is light strong and durableiii. plastics are poor conductors of heat and electricity

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19 Write some uses of bakelite 20 Write some properties and uses of melamine 22 Write short notes on the following  a. plastic and health care industry b. plastic cookware c. Teflon d. fire proof plastic 23 What are biodegradable and non-biodegradable materials?