Physics
Woollen cloth protects the body from cold because

It is a good conductor of heat
It is a poor conductor of heat
It reflects heat
External heat rays enter into the body through the woollen cloth

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Physics
Mica is used in electrical appliances such as electric iron because mica is

a bad conductor of heat as well as electricity
a bad conductor of heat but a good conductor of electricity
a good conductor of heat but a bad conductor of electricity
a good conductor of heat as well as electricity

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