Discussion
Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).
Assertion (A): Silver has the best electrical conductivity among metals.
Reason (R): Wood is an insulator of electricity.
Answer: B
Both statements are true, but the reason does not explain the assertion. Silver has the highest electrical conductivity of all metals, so A is true. Wood is an electrical insulator, so R is true. But conductivity of silver depends on its free electrons and metallic bonding. That wood is an insulator says nothing about why silver conducts so well, so R is not the explanation of A.
Options 1, 3 and 4 each treat one statement as false or the link as valid, which is wrong.
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