SO 2 and CO 2 gas can be differentiated by

1. ${\mathrm{MnO}}_4^{-}$
2. ${\mathrm{Cr}}_2{\mathrm{O}}_7^{2-}$
3. lime water
4. Both $\mathrm{A} \& \mathrm{B}$

Solution

Asked in: JEE-TOPICTESTS-CHEMISTRY

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