(A) : If E⁰ of Cu²⁺/Cu = +0.34V and E⁰ of Ag⁺/Ag = +0.80V then galvanic cell constructed from these is Ag/Ag⁺//Cu²⁺/Cu
(R) : In any galvanic cell the reaction that takes place is a redox reaction

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Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are true and (R) is not the correct explanation of (A)

(A) is true but (R) is false

(A) is false but (R) is true

answer is D.

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Detailed Solution

Electrode having higher reduction potential acts as cathode and electrode having lesser reduction potential acts as anode. In the given cell reaction electrode having higher reduction potential is anode and lower reduction potential is cathode, EMF is negative and cell reaction is non -spontaneous

Correct cell is $Cu |{Cu}^{+ 2}| |{Ag}^{+}| Ag$

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