QBManager

ALCOHOLS, PHENOLS AND ETHER

15447 $2 -$ chloro $- 2 -$ methylpentane on reaction with sodium methoxide in methanol yields : $(1) \begin{matrix} C H_{3} \\ | \\ C_{2} H_{5} C H_{2} C - O C H_{3} \\ | \\ C H_{3} \end{matrix}$ $(2) \begin{matrix} C_{2} H_{5} C H_{2} C = C H_{2} \\ | \\ C H_{3} \end{matrix}$ $(3) \begin{matrix} C_{2} H_{5} C H = C - C H_{3} \\ | \\ C H_{3} \end{matrix}$

1

(3)

only

2

(1)

and

(2)

3 All of these

4

(1)

and

(3)

Explanation:

When ter - alky thalides are used in Willamson synination occurs rather than substitution resuting into formation af alkene. Here alkoxide jon abstract one of the $β$ hydrogen atom along with acting as a nucleophile.

ALCOHOLS, PHENOLS AND ETHER

15448 Which of the following compounds will form significant amount of meta product during mono-nitration reaction ?

1

2

3

4

Explanation:

(a) Nitration reactions take place in presence of concentrated ${HNO}_{3}^{+}$ concentrated $H_{2} {SO}_{4}$
(b) Aniline acts as a base. In presence of $H_{2} {SO}_{4}$ , its protonation takes place and anilinium ion is formed
(c) Anilinium ion is a strongly deactivating group and meta directing in nature so it gives meta nitration product in a significant amount. 382-s249

ALCOHOLS, PHENOLS AND ETHER

15449 The correct sequence of reagents for the following conversion will be :

1

[A g (N H_{3})_{2}]^{+} O H^{-}, H^{+} / C H_{3} O H, C H_{3} M g B r

2

C H_{3} M g B r, H^{+} / C H_{3} O H, [A g (N H_{3})_{2}]^{+} O H^{-}

3

C H_{3} M g B r, [A g (N H_{3})_{2}]^{+} O H^{-}, H^{+} / C H_{3} O H

4

[A g (N H_{3})_{2}]^{+} O H^{-}, C H_{3} M g B r, H^{+} / C H_{3} O H

ALCOHOLS, PHENOLS AND ETHER

15450 Which of the following compounds will behave as a reducing sugar in an aqueous $K O H$ solution ?

1

2

3

4

Explanation:

All carbohydrates that contain a hemiacetal group are known as reducing sugar. They undergo hydrolysis in aqueous
$K O H .$ 382-s264

ALCOHOLS, PHENOLS AND ETHER

15447 $2 -$ chloro $- 2 -$ methylpentane on reaction with sodium methoxide in methanol yields : $(1) \begin{matrix} C H_{3} \\ | \\ C_{2} H_{5} C H_{2} C - O C H_{3} \\ | \\ C H_{3} \end{matrix}$ $(2) \begin{matrix} C_{2} H_{5} C H_{2} C = C H_{2} \\ | \\ C H_{3} \end{matrix}$ $(3) \begin{matrix} C_{2} H_{5} C H = C - C H_{3} \\ | \\ C H_{3} \end{matrix}$

1

(3)

only

2

(1)

and

(2)

3 All of these

4

(1)

and

(3)

Explanation:

When ter - alky thalides are used in Willamson synination occurs rather than substitution resuting into formation af alkene. Here alkoxide jon abstract one of the $β$ hydrogen atom along with acting as a nucleophile.

ALCOHOLS, PHENOLS AND ETHER

15448 Which of the following compounds will form significant amount of meta product during mono-nitration reaction ?

1

2

3

4

Explanation:

(a) Nitration reactions take place in presence of concentrated ${HNO}_{3}^{+}$ concentrated $H_{2} {SO}_{4}$
(b) Aniline acts as a base. In presence of $H_{2} {SO}_{4}$ , its protonation takes place and anilinium ion is formed
(c) Anilinium ion is a strongly deactivating group and meta directing in nature so it gives meta nitration product in a significant amount. 382-s249

ALCOHOLS, PHENOLS AND ETHER

15449 The correct sequence of reagents for the following conversion will be :

1

[A g (N H_{3})_{2}]^{+} O H^{-}, H^{+} / C H_{3} O H, C H_{3} M g B r

2

C H_{3} M g B r, H^{+} / C H_{3} O H, [A g (N H_{3})_{2}]^{+} O H^{-}

3

C H_{3} M g B r, [A g (N H_{3})_{2}]^{+} O H^{-}, H^{+} / C H_{3} O H

4

[A g (N H_{3})_{2}]^{+} O H^{-}, C H_{3} M g B r, H^{+} / C H_{3} O H

ALCOHOLS, PHENOLS AND ETHER

15450 Which of the following compounds will behave as a reducing sugar in an aqueous $K O H$ solution ?

1

2

3

4

Explanation:

All carbohydrates that contain a hemiacetal group are known as reducing sugar. They undergo hydrolysis in aqueous
$K O H .$ 382-s264

ALCOHOLS, PHENOLS AND ETHER

15447 $2 -$ chloro $- 2 -$ methylpentane on reaction with sodium methoxide in methanol yields : $(1) \begin{matrix} C H_{3} \\ | \\ C_{2} H_{5} C H_{2} C - O C H_{3} \\ | \\ C H_{3} \end{matrix}$ $(2) \begin{matrix} C_{2} H_{5} C H_{2} C = C H_{2} \\ | \\ C H_{3} \end{matrix}$ $(3) \begin{matrix} C_{2} H_{5} C H = C - C H_{3} \\ | \\ C H_{3} \end{matrix}$

1

(3)

only

2

(1)

and

(2)

3 All of these

4

(1)

and

(3)

Explanation:

When ter - alky thalides are used in Willamson synination occurs rather than substitution resuting into formation af alkene. Here alkoxide jon abstract one of the $β$ hydrogen atom along with acting as a nucleophile.

ALCOHOLS, PHENOLS AND ETHER

15448 Which of the following compounds will form significant amount of meta product during mono-nitration reaction ?

1

2

3

4

Explanation:

(a) Nitration reactions take place in presence of concentrated ${HNO}_{3}^{+}$ concentrated $H_{2} {SO}_{4}$
(b) Aniline acts as a base. In presence of $H_{2} {SO}_{4}$ , its protonation takes place and anilinium ion is formed
(c) Anilinium ion is a strongly deactivating group and meta directing in nature so it gives meta nitration product in a significant amount. 382-s249

ALCOHOLS, PHENOLS AND ETHER

15449 The correct sequence of reagents for the following conversion will be :

1

[A g (N H_{3})_{2}]^{+} O H^{-}, H^{+} / C H_{3} O H, C H_{3} M g B r

2

C H_{3} M g B r, H^{+} / C H_{3} O H, [A g (N H_{3})_{2}]^{+} O H^{-}

3

C H_{3} M g B r, [A g (N H_{3})_{2}]^{+} O H^{-}, H^{+} / C H_{3} O H

4

[A g (N H_{3})_{2}]^{+} O H^{-}, C H_{3} M g B r, H^{+} / C H_{3} O H

ALCOHOLS, PHENOLS AND ETHER

15450 Which of the following compounds will behave as a reducing sugar in an aqueous $K O H$ solution ?

1

2

3

4

Explanation:

All carbohydrates that contain a hemiacetal group are known as reducing sugar. They undergo hydrolysis in aqueous
$K O H .$ 382-s264

ALCOHOLS, PHENOLS AND ETHER

15447 $2 -$ chloro $- 2 -$ methylpentane on reaction with sodium methoxide in methanol yields : $(1) \begin{matrix} C H_{3} \\ | \\ C_{2} H_{5} C H_{2} C - O C H_{3} \\ | \\ C H_{3} \end{matrix}$ $(2) \begin{matrix} C_{2} H_{5} C H_{2} C = C H_{2} \\ | \\ C H_{3} \end{matrix}$ $(3) \begin{matrix} C_{2} H_{5} C H = C - C H_{3} \\ | \\ C H_{3} \end{matrix}$

1

(3)

only

2

(1)

and

(2)

3 All of these

4

(1)

and

(3)

Explanation:

When ter - alky thalides are used in Willamson synination occurs rather than substitution resuting into formation af alkene. Here alkoxide jon abstract one of the $β$ hydrogen atom along with acting as a nucleophile.

ALCOHOLS, PHENOLS AND ETHER

15448 Which of the following compounds will form significant amount of meta product during mono-nitration reaction ?

1

2

3

4

Explanation:

(a) Nitration reactions take place in presence of concentrated ${HNO}_{3}^{+}$ concentrated $H_{2} {SO}_{4}$
(b) Aniline acts as a base. In presence of $H_{2} {SO}_{4}$ , its protonation takes place and anilinium ion is formed
(c) Anilinium ion is a strongly deactivating group and meta directing in nature so it gives meta nitration product in a significant amount. 382-s249

ALCOHOLS, PHENOLS AND ETHER

15449 The correct sequence of reagents for the following conversion will be :

1

[A g (N H_{3})_{2}]^{+} O H^{-}, H^{+} / C H_{3} O H, C H_{3} M g B r

2

C H_{3} M g B r, H^{+} / C H_{3} O H, [A g (N H_{3})_{2}]^{+} O H^{-}

3

C H_{3} M g B r, [A g (N H_{3})_{2}]^{+} O H^{-}, H^{+} / C H_{3} O H

4

[A g (N H_{3})_{2}]^{+} O H^{-}, C H_{3} M g B r, H^{+} / C H_{3} O H

ALCOHOLS, PHENOLS AND ETHER

15450 Which of the following compounds will behave as a reducing sugar in an aqueous $K O H$ solution ?

1

2

3

4

Explanation:

All carbohydrates that contain a hemiacetal group are known as reducing sugar. They undergo hydrolysis in aqueous
$K O H .$ 382-s264