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Q.

The correct match is

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a

A - 4 B - 3 C - 1  D - 5

b

A - 2 B - 4  C - 1  D  - 3

c

A - 4 B - 1  C - 2 D - 3

d

A - 3 B - 2  C - 1 D - 4

answer is C.

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Detailed Solution

NH3Ox. state of  nitrogen = -3This is the least Ox. state of nitrogen(Group.No-8)∴NH3 can act like reductant but never act like OxidantKMnO4Ox. state of 'Mn' = +7This is the highest Ox. state of 'Mn' (group.No)∴KMnO4  can act like oxidant but never act like reductantSO2Ox. state of sulphur = +4This is the intermediate Ox. state of sulphur (between - 2 & +6)∴SO2 can act like both oxidant (Or) reductantHeNeither oxidant nor reductant
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