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Question

Assertion :As a gasoline additive, benzene increases the octane rating and reduces knocking. Reason: Tetraethyl lead replaced benzene as the most widely used antiknock additive.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
Gasoline additive benzene increases the octane rating and reduces knocking.
Tetraethyl lead replaced benzene as most widely used antiknock additive for commercial purpose.
Thus, both Assertion and Reason are correct but the Reason is not the correct explanation of the Assertion.

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