MCQ
Which is lewis acid ?
- A$H_2O$
- B$HCl$
- ✓$SO_2$
- D$NH_3$
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| Column $I$ | Column $II$ | ||
| $(A)$ | ${\left( {C{H_3}} \right)_3}CH + 2{O_2}\xrightarrow[{\left[ O \right]}]{{KMn{O_4}}}$ | $(i)$ | $CH_3COOH+H_2O$ |
| $(B)$ | $2C{H_4} + {O_2}\xrightarrow[{100\,atm}]{{Cu/523\,\,K}}$ | $(ii)$ | $(CH_3)_3COH$ |
| $(C)$ | $C{H_4} + {O_2}\xrightarrow[\Delta ]{{M{o_2}{O_3}}}$ | $(iii)$ | $2CH_3OH$ |
| $(D)$ | $C{H_3} - C{H_3} + \frac{3}{2}{O_2}\xrightarrow{{{{\left( {C{H_3}COO} \right)}_2}Mn}}$ | $(iv)$ | $HCHO + H_2O$ |