Question

Assertion: $Mg$ cannot be obtained by reduction of its metal oxide by aluminium.

Reason: $Mg$ is less electropositive than $Al$

• A. If both assertion and reason are true and reason is the correct explanation of assertion.
• B. If both assertion and reason are false.
• C. If both assertion and reason are true but reason is not the correct explanation of assertion.
• D. If assertion is true but reason is false.

Answer 1

The correct option is D If assertion is true but reason is false.

$M{g}^{2+}$ ions cannot be reduced by chemical reactions because magnesium metal is highly electropositive and has very low standard reduction potential.