1.

Assertion (A): Copper and aluminium are two metal which are most commonly used for current electricity. Reason (R ): Conductors are those substances in which electric charge can flow freely.

Answer»

Both (A) and (R ) are TRUE and (R ) is correct explanation of the ASSERTION
Both (A ) and ( R) are true but (R ) is not the correct explanation of the assertion.
(A ) is true but (R ) is false
(A) is false but (R ) is true

Solution :Copper and ALUMINIUM are very GOOD conductors of electricity and thus are commonly used.


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