11. ALCOHOLS, PHENOLS AND ETHERS
ALCOHOLS, PHENOLS AND ETHER

15391 When alcohol reacts with concentrated \({H_2}S{O_4}\) intermediate compound formed is

1 Carbonium ion
2 Alkoxy ion
3 Alkyl hydrogen sulphate
4 None of these
ALCOHOLS, PHENOLS AND ETHER

15392 $\begin{matrix}
   C{{H}_{3}}-CH-C{{H}_{3}}  \\
   \,|\,\,\,\,\,\,\,\,\,  \\
   OH\,\,\,  \\
\end{matrix}$$\xrightarrow{PB{{r}_{3}}}A\xrightarrow{Mg}B\xrightarrow{\begin{matrix}
   O\,\,  \\
   /\,\,\,\,\backslash \,  \\
   C{{H}_{2}}-\,C{{H}_{2}}  \\
\end{matrix}}C$ $\xrightarrow{{{H_2}O}}D\( Here, \)D$ is

1 $\begin{matrix}
   C{{H}_{3}}-CH-O-C{{H}_{2}}-C{{H}_{3}}  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}  \\
\end{matrix}$
2 $\begin{matrix}
   C{{H}_{3}}-O-CH-C{{H}_{2}}C{{H}_{3}}  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}  \\
\end{matrix}$
3 $\begin{matrix}
   C{{H}_{3}}-CH-C{{H}_{2}}C{{H}_{2}}OH  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$
4 $\begin{matrix}
   C{{H}_{3}}-C{{H}_{2}}-CH-C{{H}_{2}}OH  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$
ALCOHOLS, PHENOLS AND ETHER

15393 Phenol is more acidic than

1 355-a264
2 355-b264
3 \({C_2}{H_2}\)
4 Both \((a)\) and \((c)\)
ALCOHOLS, PHENOLS AND ETHER

15394 In the reaction, \({C_6}{H_5}CHO + {(C{H_3}CO)_2}O\xrightarrow{{C{H_3}COONa}}(A)\) product \((A)\) is

1 Acetaldehyde
2 Cinnamic acid
3 \(\beta-\) nephthol
4 Phenol
ALCOHOLS, PHENOLS AND ETHER

15391 When alcohol reacts with concentrated \({H_2}S{O_4}\) intermediate compound formed is

1 Carbonium ion
2 Alkoxy ion
3 Alkyl hydrogen sulphate
4 None of these
ALCOHOLS, PHENOLS AND ETHER

15392 $\begin{matrix}
   C{{H}_{3}}-CH-C{{H}_{3}}  \\
   \,|\,\,\,\,\,\,\,\,\,  \\
   OH\,\,\,  \\
\end{matrix}$$\xrightarrow{PB{{r}_{3}}}A\xrightarrow{Mg}B\xrightarrow{\begin{matrix}
   O\,\,  \\
   /\,\,\,\,\backslash \,  \\
   C{{H}_{2}}-\,C{{H}_{2}}  \\
\end{matrix}}C$ $\xrightarrow{{{H_2}O}}D\( Here, \)D$ is

1 $\begin{matrix}
   C{{H}_{3}}-CH-O-C{{H}_{2}}-C{{H}_{3}}  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}  \\
\end{matrix}$
2 $\begin{matrix}
   C{{H}_{3}}-O-CH-C{{H}_{2}}C{{H}_{3}}  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}  \\
\end{matrix}$
3 $\begin{matrix}
   C{{H}_{3}}-CH-C{{H}_{2}}C{{H}_{2}}OH  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$
4 $\begin{matrix}
   C{{H}_{3}}-C{{H}_{2}}-CH-C{{H}_{2}}OH  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$
ALCOHOLS, PHENOLS AND ETHER

15393 Phenol is more acidic than

1 355-a264
2 355-b264
3 \({C_2}{H_2}\)
4 Both \((a)\) and \((c)\)
ALCOHOLS, PHENOLS AND ETHER

15394 In the reaction, \({C_6}{H_5}CHO + {(C{H_3}CO)_2}O\xrightarrow{{C{H_3}COONa}}(A)\) product \((A)\) is

1 Acetaldehyde
2 Cinnamic acid
3 \(\beta-\) nephthol
4 Phenol
ALCOHOLS, PHENOLS AND ETHER

15391 When alcohol reacts with concentrated \({H_2}S{O_4}\) intermediate compound formed is

1 Carbonium ion
2 Alkoxy ion
3 Alkyl hydrogen sulphate
4 None of these
ALCOHOLS, PHENOLS AND ETHER

15392 $\begin{matrix}
   C{{H}_{3}}-CH-C{{H}_{3}}  \\
   \,|\,\,\,\,\,\,\,\,\,  \\
   OH\,\,\,  \\
\end{matrix}$$\xrightarrow{PB{{r}_{3}}}A\xrightarrow{Mg}B\xrightarrow{\begin{matrix}
   O\,\,  \\
   /\,\,\,\,\backslash \,  \\
   C{{H}_{2}}-\,C{{H}_{2}}  \\
\end{matrix}}C$ $\xrightarrow{{{H_2}O}}D\( Here, \)D$ is

1 $\begin{matrix}
   C{{H}_{3}}-CH-O-C{{H}_{2}}-C{{H}_{3}}  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}  \\
\end{matrix}$
2 $\begin{matrix}
   C{{H}_{3}}-O-CH-C{{H}_{2}}C{{H}_{3}}  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}  \\
\end{matrix}$
3 $\begin{matrix}
   C{{H}_{3}}-CH-C{{H}_{2}}C{{H}_{2}}OH  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$
4 $\begin{matrix}
   C{{H}_{3}}-C{{H}_{2}}-CH-C{{H}_{2}}OH  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$
ALCOHOLS, PHENOLS AND ETHER

15393 Phenol is more acidic than

1 355-a264
2 355-b264
3 \({C_2}{H_2}\)
4 Both \((a)\) and \((c)\)
ALCOHOLS, PHENOLS AND ETHER

15394 In the reaction, \({C_6}{H_5}CHO + {(C{H_3}CO)_2}O\xrightarrow{{C{H_3}COONa}}(A)\) product \((A)\) is

1 Acetaldehyde
2 Cinnamic acid
3 \(\beta-\) nephthol
4 Phenol
ALCOHOLS, PHENOLS AND ETHER

15391 When alcohol reacts with concentrated \({H_2}S{O_4}\) intermediate compound formed is

1 Carbonium ion
2 Alkoxy ion
3 Alkyl hydrogen sulphate
4 None of these
ALCOHOLS, PHENOLS AND ETHER

15392 $\begin{matrix}
   C{{H}_{3}}-CH-C{{H}_{3}}  \\
   \,|\,\,\,\,\,\,\,\,\,  \\
   OH\,\,\,  \\
\end{matrix}$$\xrightarrow{PB{{r}_{3}}}A\xrightarrow{Mg}B\xrightarrow{\begin{matrix}
   O\,\,  \\
   /\,\,\,\,\backslash \,  \\
   C{{H}_{2}}-\,C{{H}_{2}}  \\
\end{matrix}}C$ $\xrightarrow{{{H_2}O}}D\( Here, \)D$ is

1 $\begin{matrix}
   C{{H}_{3}}-CH-O-C{{H}_{2}}-C{{H}_{3}}  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}  \\
\end{matrix}$
2 $\begin{matrix}
   C{{H}_{3}}-O-CH-C{{H}_{2}}C{{H}_{3}}  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}}  \\
\end{matrix}$
3 $\begin{matrix}
   C{{H}_{3}}-CH-C{{H}_{2}}C{{H}_{2}}OH  \\
   |\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{3\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$
4 $\begin{matrix}
   C{{H}_{3}}-C{{H}_{2}}-CH-C{{H}_{2}}OH  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
\end{matrix}$
ALCOHOLS, PHENOLS AND ETHER

15393 Phenol is more acidic than

1 355-a264
2 355-b264
3 \({C_2}{H_2}\)
4 Both \((a)\) and \((c)\)
ALCOHOLS, PHENOLS AND ETHER

15394 In the reaction, \({C_6}{H_5}CHO + {(C{H_3}CO)_2}O\xrightarrow{{C{H_3}COONa}}(A)\) product \((A)\) is

1 Acetaldehyde
2 Cinnamic acid
3 \(\beta-\) nephthol
4 Phenol