QBManager

ALCOHOLS, PHENOLS AND ETHER

15438 The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is

1 salicylaldehyde

2 salicylic acid

3 phthalic acid

4 benzoic acid

ALCOHOLS, PHENOLS AND ETHER

15417 Number of isomeric alcohols of molecular formula $C_6H_{14}O$ which give positive iodoform test is

1 $3$

2 $4$

3 $5$

4 $2$

ALCOHOLS, PHENOLS AND ETHER

15418 Which of the following compounds can be used as antifreeze in automobile radiators?

1 Methyl alcohol

2 Glycol

3 Nitrophenol

4 Ethyl alcohol

ALCOHOLS, PHENOLS AND ETHER

15419 In the following reactions,$(i) \,\,\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - CH - C{H_3}} \\
{\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,OH}
\end{array}\,\xrightarrow{{{H^ + }/heat}}\,\,\mathop A\limits_{[Major\,product]} \, + \,\mathop B\limits_{[Minor\,product]} $$(ii)\,\, A\xrightarrow[{in\,\,absence\,\,\,of\,peroxide}]{{HBr,\,dark}}\,\,\mathop C\limits_{[Major\,product]} \, + \,\mathop D\limits_{[Minor\,product]} $the major products $(A)$ and $(C)$ are respectively

1 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} = C - C{H_2} - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

2 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C = CH - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

3 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} = C - C{H_2} - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

4 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C = CH - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,Br}
\end{array}$

Explanation:

$\begin{matrix}
\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix} \\
C{{H}_{3}}CH-CHC{{H}_{3}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\, \,\,\,OH \\
\end{matrix}$ $\xrightarrow[{heat}]{{{H^ + }}}$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - \mathop C\limits_ \oplus H - C{H_3}}
\end{array}$ $\xrightarrow{{1\,,\,2\, - \,hydride\,shift}}$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - \mathop C\limits_ \oplus - C{H_2} - C{H_3}}
\end{array}$ $\xrightarrow{{ - \,{H^ + }}}$ $\underset{\begin{smallmatrix}
(A) \\
Major
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}}}\,$ $+$ $\underset{\begin{smallmatrix}
(B) \\
Minor
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-CH-CH=C{{H}_{2}} \\
\end{matrix}}}\,$
$\underset{\begin{smallmatrix}
(A) \\
Major
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}}}\,$ $\xrightarrow[{in\,\,absence\,\,of\,\,peroxide}]{{HBr\,,\,dark}}$ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,}
\end{array}\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}}\limits_{(C)\,\,\,major} $ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}}\limits_{(D)\,\,\,minor} $

ALCOHOLS, PHENOLS AND ETHER

15438 The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is

1 salicylaldehyde

2 salicylic acid

3 phthalic acid

4 benzoic acid

ALCOHOLS, PHENOLS AND ETHER

15417 Number of isomeric alcohols of molecular formula $C_6H_{14}O$ which give positive iodoform test is

1 $3$

2 $4$

3 $5$

4 $2$

ALCOHOLS, PHENOLS AND ETHER

15418 Which of the following compounds can be used as antifreeze in automobile radiators?

1 Methyl alcohol

2 Glycol

3 Nitrophenol

4 Ethyl alcohol

ALCOHOLS, PHENOLS AND ETHER

15419 In the following reactions,$(i) \,\,\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - CH - C{H_3}} \\
{\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,OH}
\end{array}\,\xrightarrow{{{H^ + }/heat}}\,\,\mathop A\limits_{[Major\,product]} \, + \,\mathop B\limits_{[Minor\,product]} $$(ii)\,\, A\xrightarrow[{in\,\,absence\,\,\,of\,peroxide}]{{HBr,\,dark}}\,\,\mathop C\limits_{[Major\,product]} \, + \,\mathop D\limits_{[Minor\,product]} $the major products $(A)$ and $(C)$ are respectively

1 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} = C - C{H_2} - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

2 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C = CH - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

3 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} = C - C{H_2} - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

4 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C = CH - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,Br}
\end{array}$

Explanation:

$\begin{matrix}
\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix} \\
C{{H}_{3}}CH-CHC{{H}_{3}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\, \,\,\,OH \\
\end{matrix}$ $\xrightarrow[{heat}]{{{H^ + }}}$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - \mathop C\limits_ \oplus H - C{H_3}}
\end{array}$ $\xrightarrow{{1\,,\,2\, - \,hydride\,shift}}$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - \mathop C\limits_ \oplus - C{H_2} - C{H_3}}
\end{array}$ $\xrightarrow{{ - \,{H^ + }}}$ $\underset{\begin{smallmatrix}
(A) \\
Major
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}}}\,$ $+$ $\underset{\begin{smallmatrix}
(B) \\
Minor
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-CH-CH=C{{H}_{2}} \\
\end{matrix}}}\,$
$\underset{\begin{smallmatrix}
(A) \\
Major
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}}}\,$ $\xrightarrow[{in\,\,absence\,\,of\,\,peroxide}]{{HBr\,,\,dark}}$ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,}
\end{array}\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}}\limits_{(C)\,\,\,major} $ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}}\limits_{(D)\,\,\,minor} $

ALCOHOLS, PHENOLS AND ETHER

15438 The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is

1 salicylaldehyde

2 salicylic acid

3 phthalic acid

4 benzoic acid

ALCOHOLS, PHENOLS AND ETHER

15417 Number of isomeric alcohols of molecular formula $C_6H_{14}O$ which give positive iodoform test is

1 $3$

2 $4$

3 $5$

4 $2$

ALCOHOLS, PHENOLS AND ETHER

15418 Which of the following compounds can be used as antifreeze in automobile radiators?

1 Methyl alcohol

2 Glycol

3 Nitrophenol

4 Ethyl alcohol

ALCOHOLS, PHENOLS AND ETHER

15419 In the following reactions,$(i) \,\,\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - CH - C{H_3}} \\
{\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,OH}
\end{array}\,\xrightarrow{{{H^ + }/heat}}\,\,\mathop A\limits_{[Major\,product]} \, + \,\mathop B\limits_{[Minor\,product]} $$(ii)\,\, A\xrightarrow[{in\,\,absence\,\,\,of\,peroxide}]{{HBr,\,dark}}\,\,\mathop C\limits_{[Major\,product]} \, + \,\mathop D\limits_{[Minor\,product]} $the major products $(A)$ and $(C)$ are respectively

1 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} = C - C{H_2} - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

2 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C = CH - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

3 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} = C - C{H_2} - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

4 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C = CH - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,Br}
\end{array}$

Explanation:

$\begin{matrix}
\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix} \\
C{{H}_{3}}CH-CHC{{H}_{3}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\, \,\,\,OH \\
\end{matrix}$ $\xrightarrow[{heat}]{{{H^ + }}}$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - \mathop C\limits_ \oplus H - C{H_3}}
\end{array}$ $\xrightarrow{{1\,,\,2\, - \,hydride\,shift}}$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - \mathop C\limits_ \oplus - C{H_2} - C{H_3}}
\end{array}$ $\xrightarrow{{ - \,{H^ + }}}$ $\underset{\begin{smallmatrix}
(A) \\
Major
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}}}\,$ $+$ $\underset{\begin{smallmatrix}
(B) \\
Minor
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-CH-CH=C{{H}_{2}} \\
\end{matrix}}}\,$
$\underset{\begin{smallmatrix}
(A) \\
Major
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}}}\,$ $\xrightarrow[{in\,\,absence\,\,of\,\,peroxide}]{{HBr\,,\,dark}}$ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,}
\end{array}\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}}\limits_{(C)\,\,\,major} $ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}}\limits_{(D)\,\,\,minor} $

ALCOHOLS, PHENOLS AND ETHER

15438 The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is

1 salicylaldehyde

2 salicylic acid

3 phthalic acid

4 benzoic acid

ALCOHOLS, PHENOLS AND ETHER

15417 Number of isomeric alcohols of molecular formula $C_6H_{14}O$ which give positive iodoform test is

1 $3$

2 $4$

3 $5$

4 $2$

ALCOHOLS, PHENOLS AND ETHER

15418 Which of the following compounds can be used as antifreeze in automobile radiators?

1 Methyl alcohol

2 Glycol

3 Nitrophenol

4 Ethyl alcohol

ALCOHOLS, PHENOLS AND ETHER

15419 In the following reactions,$(i) \,\,\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - CH - C{H_3}} \\
{\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,OH}
\end{array}\,\xrightarrow{{{H^ + }/heat}}\,\,\mathop A\limits_{[Major\,product]} \, + \,\mathop B\limits_{[Minor\,product]} $$(ii)\,\, A\xrightarrow[{in\,\,absence\,\,\,of\,peroxide}]{{HBr,\,dark}}\,\,\mathop C\limits_{[Major\,product]} \, + \,\mathop D\limits_{[Minor\,product]} $the major products $(A)$ and $(C)$ are respectively

1 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} = C - C{H_2} - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

2 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C = CH - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

3 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_2} = C - C{H_2} - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}$

4 $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - C = CH - C{H_3}}
\end{array}$ and $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,|} \\
{\,\,\,\,\,\,\,\,\,\,\,\,Br}
\end{array}$

Explanation:

$\begin{matrix}
\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
\end{matrix} \\
C{{H}_{3}}CH-CHC{{H}_{3}} \\
\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\, \\
\,\,\,\,\,\,\,\,\,\,\,\, \,\,\,OH \\
\end{matrix}$ $\xrightarrow[{heat}]{{{H^ + }}}$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - \mathop C\limits_ \oplus H - C{H_3}}
\end{array}$ $\xrightarrow{{1\,,\,2\, - \,hydride\,shift}}$ $\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - \mathop C\limits_ \oplus - C{H_2} - C{H_3}}
\end{array}$ $\xrightarrow{{ - \,{H^ + }}}$ $\underset{\begin{smallmatrix}
(A) \\
Major
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}}}\,$ $+$ $\underset{\begin{smallmatrix}
(B) \\
Minor
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-CH-CH=C{{H}_{2}} \\
\end{matrix}}}\,$
$\underset{\begin{smallmatrix}
(A) \\
Major
\end{smallmatrix}}{\mathop{\begin{matrix}
C{{H}_{3}}\,\,\,\,\,\,\,\,\,\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{3}}-C=CH-C{{H}_{3}} \\
\end{matrix}}}\,$ $\xrightarrow[{in\,\,absence\,\,of\,\,peroxide}]{{HBr\,,\,dark}}$ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,}
\end{array}\,\,\,\,\,\,\,\,} \\
{C{H_3} - C - C{H_2} - C{H_3}} \\
{\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}}\limits_{(C)\,\,\,major} $ $\mathop {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{C{H_3}\,\,\,\,} \\
{|\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}\,\,\,\,\,\,\,\,\,\,} \\
{C{H_3} - CH - CH - C{H_3}} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\
{\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,}
\end{array}}\limits_{(D)\,\,\,minor} $

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Question Bank Series

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