Assertion :For the Daniell cell, $Z n | Z n^{2 +} | | C u^{2 +} | C u$ with $E_{c e l l} = 1.1 v o l t$ , the application of opposite potential greater than $1.1 V$ results into flow of electrons from cathode to anode. Reason: $Z n$ is deposited at anode and $C u$ is dissolved at cathode.

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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Assertion is incorrect but Reason is correct

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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
The application of the opposite potentail greater than $1.1 V$ , the cell reaction will get reversed and anode become cathode and cathode becomes anode;
so, electrons starts flowing from higher potential to lower potential i.e., from cathode to anode;
and as a result of this $Z n$ is deposited at anode and $C u$ is dissolved at cathode.

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Z n | Z n^{2 +} | | C u^{2 +} | C u

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Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

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