MCQ
When acetylene is reacted with $HBr$, we get
- AMethyl bromide
- BEthyl bromide
- CEthylene bromide
- ✓Ethylidene bromide

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$(I)\, [CrCl_2(NO_2)_2(NH_3)_2]^-$ $(II)\, [Co(NO_2)_3(NH_3)_3]$
$(III)\, [PtCl(NO_2)(NH_3 )(py)]$ $(IV)\, [PtBrCl(en)]$
$(I)\,\,\,-\,\,\,(II)\,\,\,-\,\,\,(III)\,\,\,-\,\,\,(IV)$
| $LIST-I ($Precipitating reagent and conditions) |
$LIST-II ($Cation$)$ |
||
| $A.$ | $NH_4Cl + NH_4OH$ | $I.$ | $Mn^{2+}$ |
| $B.$ | $NH_4OH + Na_2CO_3$ | $II.$ | $Pb^{2+}$ |
| $C.$ | $NH_4OH + NH_4Cl + H_2S$ gas | $III.$ | $Al^{3+}$ |
| $D.$ | dilute $HCl$ | $IV.$ | $Sr^{2+}$ |
