The correct order of dehydration of alcohols is
- A$1^{\circ} > 2^{\circ} > 3^{\circ}$
- B$3^{\circ} > 2^{\circ} > 1^{\circ}$
- C$2^{\circ} > 1^{\circ} > 3^{\circ}$
- D$1^{\circ} > 3^{\circ} > 2^{\circ}$
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What are $X$ and $Y$ in the following reaction? $R-OH + PCl_5 \rightarrow X + Y + HCl$
$A$ solution of optically active $1$-phenylethanol racemizes in acidified aqueous medium. It is due to
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Column-$I$ (Compound) Column-$II$ (Major Product) $A$. $1$-Methylcyclohexanol $i$. $1$-Methylcyclohexene $B$. Butan-$1$-ol $ii$. But-$1$-ene $C$. tert-Butyl alcohol $iii$. Isobutylene $D$. Butan-$2$-ol $iv$. But-$2$-ene
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| $A$. $1$-Methylcyclohexanol | $i$. $1$-Methylcyclohexene |
| $B$. Butan-$1$-ol | $ii$. But-$1$-ene |
| $C$. tert-Butyl alcohol | $iii$. Isobutylene |
| $D$. Butan-$2$-ol | $iv$. But-$2$-ene |
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