MCQ
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- AMustard Gas
- BChloropicrin
- ✓Chloretone
- DLewsite gas


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$Na _{2} O , As _{2} O _{3}, N _{2} O , NO$ and $Cl _{2} O _{7}$
Number of amphoteric oxides is ..... .
$(I) \,C{H_3}CH = C{H_2} + HBr\xrightarrow{{peroxide}}$
$(II)\, C{H_3}CH = C{H_2} + HBr\xrightarrow{{CC{l_4}}}$
$(III)\, C{H_3}C{H_2}C{H_3} + B{r_2}\xrightarrow{{hv}}$
$(IV)\,C{H_3}CH = C{H_2} + B{r_2}\xrightarrow{{CC{l_4}}}$