Assertion : $M g^{2 +} + Z n S O_{4} \to M g S O_{4} + Z n^{2 +}$ Reason: More active metal can displace less active metal from its salt solution.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is D Both Assertion and Reason are incorrect.
$M g^{2 +} + Z n S O_{4} \to Z n^{+ 2} + S O_{4}^{- 2} + M g^{2 +}$ ( no reaction), as less active metal can displace more active metal from its salt solution.
Here, $M g^{+ 2}$ is more reactive so it can't displace other.

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(e) Assertion is incorrect but reason is correct.

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Assertion :Mg2++ZnSO4→MgSO4+Zn2+ Reason: More active metal can displace less active metal from its salt solution.

The correct option is D Both Assertion and Reason are incorrect.Mg2++ZnSO4→Zn+2+SO−24+Mg2+ ( no reaction), as less active metal can displace more active metal from its salt solution.Here, Mg+2 is more reactive so it can't displace other.

Assertion : $M g^{2 +} + Z n S O_{4} \to M g S O_{4} + Z n^{2 +}$ Reason: More active metal can displace less active metal from its salt solution.

The correct option is D Both Assertion and Reason are incorrect.
$M g^{2 +} + Z n S O_{4} \to Z n^{+ 2} + S O_{4}^{- 2} + M g^{2 +}$ ( no reaction), as less active metal can displace more active metal from its salt solution.
Here, $M g^{+ 2}$ is more reactive so it can't displace other.