Question

which is these is not a good conductor of heat​

Answer 1

Poor conductors are any material that does not conduct electricity, heat or both very well and are generally known as insulators. Non-metals are typically insulators (poor conductors) while metals, i.e. Copper, are very good conductors which is why they are used in cookwear and electric wiring.

Answer 2

If heat can not be conducted from one end to other then it is know as poor conductor or bad conductor of heat.

• It cannot carry out heat through it.

    Example: Wood, cloth, air, water, plastic.