MCQ
$IUPAC$ name of the following compound $C{H_3} - C{H_2} - \mathop {CH - C{H_2}}\limits^{\mathop {O\,\,\,\,\,\,\,}\limits_{/\,\,\,\,\,\backslash \,\,\,\,\,\,\,} } $ is
- ✓$1, 2-$ epoxy butane
- BEthyl methyl ether
- CKeto pentanone
- DNone of these
$\mathop C\limits_4 {H_3} - \mathop C\limits_3 {H_2} - \mathop {\mathop C\limits_2 H - \mathop C\limits_1 {H_2}}\limits^{\mathop {O{\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} {\kern 1pt} }\limits_{/{\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} \backslash {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} {\mkern 1mu} } } $
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| Cations | Group reaction |
| $P \rightarrow Pb ^{2+}, Cu ^{2+}$ | $(i)$ $H _2 S$ gas in presence of dilute $HCl$ |
| $Q \rightarrow Al ^{3+}, Fe ^{3+}$ | $(ii)$ $\left( NH _4\right)_2 CO _3$ in presence of $NH _4 OH$ |
| $R \rightarrow Co ^{2+}, Ni ^{2+}$ | $(iii)$ $NH _4 OH$ in presence of $NH _4 CI$ |
| $S \rightarrow Ba ^{2+}, Ca ^{2+}$ | $(iv)$ $H _2 S$ in presence of $NH _4 OH$ |

Codes: $ \quad P \quad Q \quad R \quad S $