MCQ
Correct order of oxidising nature is
- ✓$CrO_3 > MoO_3 > WO_3$
- B$MoO_3 > CrO_3 > WO_3$
- C$WO_3 > CrO_3 > MoO_3$
- D$CrO_3 > WO_3 > MoO_3$
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If molar mass of hydrochloric acid is $M.$


Statement $I$: $\mathrm{S}_8$ solid undergoes disproportionation reaction under alkaline conditions to form $\mathrm{S}^{2-}$ and $\mathrm{S}_2 \mathrm{O}_3{ }^{2-}$
Statement $II$: $\mathrm{ClO}_4^{-}$can undergodisproportionation reaction under acidic condition. In the light of the above statements, choose the most appropriate answer from the options given below :