1.

P,Q, R and S are four metals whose typical reaction are given below (I) (II) When Q is added to a solution containing the ions of the other metals, metallic P, R, and S are formed (III) P reacts with concentrated HNO_(3) but S does not The correct order of their reducing character is

Answer»

<P>`S LT P lt R lt Q`
`S lt R lt P lt Q`
`R lt Q lt P lt S`
`Q lt P lt S lt R`

ANSWER :A


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