1.

The only correct combination is -

Answer»

(I)(iii)(R)
(IV)(i)(Q)
(I)(i)(S)
(IV)(iii)(S)

Solution :`S^(-2)+H_2SO_4(DIL.)toH_2S(uarr)`
`S^(-2)+[FE(CN)_5NO]^(2+)tounderset("voilet")([Fe(CN)_5NOS](darr))`
`S^(-2)+16H^(+)+2MnO_4^(-)to2Mn^(+2)+8H_2O+5S`


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