NO, double displacement reaction is not a redox reaction.
Since there is no simultaneous oxidation and reduction the the chemical reaction.
Ex:(i)NaF + KCl >> NaCl + KF
(ii)AgNO3 + NaCl → AgCl + NaNO3
(iii)CaCl2 (aq) + 2 AgNO3 (aq) --> Ca(NO3)2 (aq) + 2 AgCl (s)
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