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Given below are two statements : 1 M aqueous solution of each of Cu ( NO ₃ )₂, AgNO ₃ , Hg ₂ ( NO ₃ )₂ ; Mg ( NO ₃ )₂ are electrolysed using inert electrodes, aligned & Given : E _ Ag ⁺ / Ag ^ =0.80 ~V , E _ Hg ₂²⁺ / Hg ^ =0.79 ~V , & E _ Cu ²⁺ / Cu ^ =0.24 ~V and E _ Mg ²⁺ / Mg ^ =-2.37 ~V aligned Statement (I) : With increasing voltage, the sequence of deposition of metals on the cathode will be Ag , Hg and Cu Stat

Options

  1. ABoth statement I and statement II are incorrect
  2. BStatement I is correct but statement II is incorrect
  3. CBoth statement I and statement II are correct
  4. DStatement I is incorrect but statement II is correct

Correct answer

B. Statement I is correct but statement II is incorrect

Step-by-step solution

Statement-II At cathode, instead of Mg , H ₂ O _ ( ) will reduce & evolve H ₂ gas.

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