Question

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Answer 1

Answer:

melemine is used because it Jay Thomas setting plastic and does not melt after being heated once

plastic used in cars and crafts and spacecraft because there light weighted and can undergo pressure heat and physical variations

special plastic ware is used in microwave oven because they are usually thermosetting plastics

Answer 2

Explanation:

c)Melamine is used to make crockery as it is a thermosetting plastic. It is heat resistant (can resist heat). i.e. It doesn't get de-formed or de-moulded on heating because of its cross-connected arrangement of monomers. this prevents its damage ffrom heat. d As we know that plastic is light and cheaper ,so by using plastic in car , aircrafts, spacecraft , we can reduce the fuel requirement and also reduce the money spent on this objects. e) BAKELITE is the special plastic cookware used in microwave. It is used for for cooking because, it's bad conductor of electricity and heat. so, the plastic will not melt and react the food material.