Q.

When applied external opposite potential in case of Daniell cell is less than 1.1 V, then

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a

the cell behaves like an electrolytic cell

b

electrons flow from zinc rod to copper rod

c

zinc deposites at the zinc electrode and copper dissolves from copper rod

d

Current flow from zinc rod to copper rod

answer is B.

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Detailed Solution

When Eext<1.1 V(i) Electrons flow from zinc electrode to copper electrode,hence, current flows from copper to zinc electrode.(ii) Zinc dissolves at anode and copper deposites at cathode.
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When applied external opposite potential in case of Daniell cell is less than 1.1 V, then