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Subject :NSO    Class : Class 6

The following objects were separated into two groups.

Which of the following can be used for the classification of the above objects?

AMetals and non-­metals
BConductors and insulators
CMagnetic and non ­magnetic
DAll of these

Why is the correct answer given as "B"? Air is not a conductor.

Ans 1:

Class : Class 3
Air is good conductor of heat.

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