QBManager

CHEMISTRY(KCET)

285564 Which of the following compounds is most acidic?

1

Cl - {CH}_{2} - {CH}_{2} - OH

Explanation:

(c) Due to electron withdrawing nature of $- {NO}_{2}$ group, o-nitrophenol is most acidic among all the given compounds.

Karnataka CET 2016

CHEMISTRY(KCET)

285565 Thereaction which involves dichlorocarbene as an electrophile is

1 Reimer-Tiemann reaction

2 Kolbe's reaction

3 Friedel-Crafts' acylation

4 Fittig's reaction.

Karnataka CET 2016

CHEMISTRY(KCET)

285566 Ethanol is converted intoethoxyethane

1 by heating excess of ethanol with conc.

H_{2} {SO}_{4}

at

140^{\circ} C

2 by heating ethanol with excess of conc.

H_{2} {SO}_{4}

at 443 K

3 by treating with conc.

H_{2} {SO}_{4}

at room temperature

4 by treating with conc.

H_{2} {SO}_{4}

at 273 K .
Alcohols, Phenols and Ethers
C-51

Explanation:

(a)
$\begin{aligned} \underset{Ethanol(excess)}{{CH}_{3} {CH}_{2} OH \overset{conc. H_{2} {SO}_{4}}{\to}}^{140^{\circ} C} \\ {CH}_{3} {CH}_{2} - O - {CH}_{2} {CH}_{3} + H_{2} O \end{aligned}$
Ethoxyethane

Karnataka CET 2016

CHEMISTRY(KCET)

285567 Arrange the following compounds in the increasing order of their acidic strength:

1 ii

<

iv

<

iii

<

i

2 ii

<

iii

<

i

<

iv

3 iii

<

ii

<

i

<

iv

4 ii

<

iii

<

iv

<

i

Karnataka CET 2015

CHEMISTRY(KCET)

285564 Which of the following compounds is most acidic?

1

Cl - {CH}_{2} - {CH}_{2} - OH

Explanation:

(c) Due to electron withdrawing nature of $- {NO}_{2}$ group, o-nitrophenol is most acidic among all the given compounds.

Karnataka CET 2016

CHEMISTRY(KCET)

285565 Thereaction which involves dichlorocarbene as an electrophile is

1 Reimer-Tiemann reaction

2 Kolbe's reaction

3 Friedel-Crafts' acylation

4 Fittig's reaction.

Karnataka CET 2016

CHEMISTRY(KCET)

285566 Ethanol is converted intoethoxyethane

1 by heating excess of ethanol with conc.

H_{2} {SO}_{4}

at

140^{\circ} C

2 by heating ethanol with excess of conc.

H_{2} {SO}_{4}

at 443 K

3 by treating with conc.

H_{2} {SO}_{4}

at room temperature

4 by treating with conc.

H_{2} {SO}_{4}

at 273 K .
Alcohols, Phenols and Ethers
C-51

Explanation:

(a)
$\begin{aligned} \underset{Ethanol(excess)}{{CH}_{3} {CH}_{2} OH \overset{conc. H_{2} {SO}_{4}}{\to}}^{140^{\circ} C} \\ {CH}_{3} {CH}_{2} - O - {CH}_{2} {CH}_{3} + H_{2} O \end{aligned}$
Ethoxyethane

Karnataka CET 2016

CHEMISTRY(KCET)

285567 Arrange the following compounds in the increasing order of their acidic strength:

1 ii

<

iv

<

iii

<

i

2 ii

<

iii

<

i

<

iv

3 iii

<

ii

<

i

<

iv

4 ii

<

iii

<

iv

<

i

Karnataka CET 2015

CHEMISTRY(KCET)

285564 Which of the following compounds is most acidic?

1

Cl - {CH}_{2} - {CH}_{2} - OH

Explanation:

(c) Due to electron withdrawing nature of $- {NO}_{2}$ group, o-nitrophenol is most acidic among all the given compounds.

Karnataka CET 2016

CHEMISTRY(KCET)

285565 Thereaction which involves dichlorocarbene as an electrophile is

1 Reimer-Tiemann reaction

2 Kolbe's reaction

3 Friedel-Crafts' acylation

4 Fittig's reaction.

Karnataka CET 2016

CHEMISTRY(KCET)

285566 Ethanol is converted intoethoxyethane

1 by heating excess of ethanol with conc.

H_{2} {SO}_{4}

at

140^{\circ} C

2 by heating ethanol with excess of conc.

H_{2} {SO}_{4}

at 443 K

3 by treating with conc.

H_{2} {SO}_{4}

at room temperature

4 by treating with conc.

H_{2} {SO}_{4}

at 273 K .
Alcohols, Phenols and Ethers
C-51

Explanation:

(a)
$\begin{aligned} \underset{Ethanol(excess)}{{CH}_{3} {CH}_{2} OH \overset{conc. H_{2} {SO}_{4}}{\to}}^{140^{\circ} C} \\ {CH}_{3} {CH}_{2} - O - {CH}_{2} {CH}_{3} + H_{2} O \end{aligned}$
Ethoxyethane

Karnataka CET 2016

CHEMISTRY(KCET)

285567 Arrange the following compounds in the increasing order of their acidic strength:

1 ii

<

iv

<

iii

<

i

2 ii

<

iii

<

i

<

iv

3 iii

<

ii

<

i

<

iv

4 ii

<

iii

<

iv

<

i

Karnataka CET 2015

CHEMISTRY(KCET)

285564 Which of the following compounds is most acidic?

1

Cl - {CH}_{2} - {CH}_{2} - OH

Explanation:

(c) Due to electron withdrawing nature of $- {NO}_{2}$ group, o-nitrophenol is most acidic among all the given compounds.

Karnataka CET 2016

CHEMISTRY(KCET)

285565 Thereaction which involves dichlorocarbene as an electrophile is

1 Reimer-Tiemann reaction

2 Kolbe's reaction

3 Friedel-Crafts' acylation

4 Fittig's reaction.

Karnataka CET 2016

CHEMISTRY(KCET)

285566 Ethanol is converted intoethoxyethane

1 by heating excess of ethanol with conc.

H_{2} {SO}_{4}

at

140^{\circ} C

2 by heating ethanol with excess of conc.

H_{2} {SO}_{4}

at 443 K

3 by treating with conc.

H_{2} {SO}_{4}

at room temperature

4 by treating with conc.

H_{2} {SO}_{4}

at 273 K .
Alcohols, Phenols and Ethers
C-51

Explanation:

(a)
$\begin{aligned} \underset{Ethanol(excess)}{{CH}_{3} {CH}_{2} OH \overset{conc. H_{2} {SO}_{4}}{\to}}^{140^{\circ} C} \\ {CH}_{3} {CH}_{2} - O - {CH}_{2} {CH}_{3} + H_{2} O \end{aligned}$
Ethoxyethane

Karnataka CET 2016

CHEMISTRY(KCET)

285567 Arrange the following compounds in the increasing order of their acidic strength:

1 ii

<

iv

<

iii

<

i

2 ii

<

iii

<

i

<

iv

3 iii

<

ii

<

i

<

iv

4 ii

<

iii

<

iv

<

i

Karnataka CET 2015