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NEET-XII-Chemistry

Previous Year Paper year:2017

with Solutions -
Qstn# 7 Prvs-QstnNext-Qstn
  • #7
    Name the gas that can readily
    decolourise acidified KMnO4 solution :
    (1) ``P_2O_5 ``
    (2) ``CO_2``
    (3) ``SO_2``
    (4) ``NO_2``
    digAnsr:   3
    Ans : (3)
    Sol. KMnO4 + SO2 + H2SO4 → K2SO4 + MnSO4 + H2O
    ∴ SO2 which is R.A. decolourize KMnO4