The standard reduction potentials of three electodes P, Q and R are respectively – 1.76 V, 0.34 V and 0.8 V. Then
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a
Metal Q will displace the cation of P from its aqueous solution and deposit the metal P
b
Both metals Q and R will displace the cation of P from its aqueous solution and deposit the metal P
c
Metal P will displace the cation of R from its aqueous solution and deposit the metal R
d
Metal R will displace the cation of Q and deposit the metal Q.
answer is C.
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Detailed Solution
Lower SRP metal displaces Higher SRP metals from their salt solutions.Since SRP of P is least it displaces Q and R from their salt solutions.SRP of Q is lesser than R displaces R from its salt solution but doesnot displace P because its SRP is higher than PR does not displace any of the given because its SRP is higher among all the given.