Q.

Statement I : Life span of Daniel cell can be increased by increasing the size of zinc electrodeStatement II : Emf of a galvanic cell varies with concentration of electrolyte

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Statement I and II are correct

Statement I is correct and Statement II is incorrect

Statement - I is incorrect and Statement - II is correct

Both statement - I and II are incorrect

answer is A.

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Detailed Solution

When size of Zinc electrode increases life span of Daniel cell increases because for more time electrons are transferred from anode to cathode.According to Nernst equation electrode potential depends on concentration of electrolyte.

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