NEET Test Series from KOTA - 10 Papers In MS WORD
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GENERAL ORGANIC CHEMISTRY
231635
The ease of hydrolysis in the compounds $\mathrm{CH}_{3} \mathrm{COCl}$ (I), $\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}$ (II) $\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}$ (III) and $\mathrm{CH}_{3} \mathrm{CONH}_{2}$ (IV) is of the order
1 I $>$ II $>$ III $>$ IV
2 IV $>$ III $>$ II $>$ I
3 I $>$ II $>$ IV $>$ III
4 II $>$ I $>$ IV $>$ III
Explanation:
The ease of hydrolysis of carbonyl compounds depend of the group attached to the carbonyl carbon. Among the given compound, chlorine $(-\mathrm{Cl})$ group is electron withdrawing group which makes the carbonyl group electrophilic. The order of the ease of hydrolysis in the compounds -$\mathrm{CH}_{3} \mathrm{COCl}$ (I) $>\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}>\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}>$ $\mathrm{CH}_{3} \mathrm{CONH}_{2}$ (IV)
WB JEET-2018
GENERAL ORGANIC CHEMISTRY
231636
The indicated atom is not a nucleophilic site in
In $\mathrm{BH}_{4}^{-}$the $\mathrm{B}$ is not nucleophilc its octate is not complete. In the nucleophilc is $\mathrm{H}^{-}$ In $\mathrm{CH}_{3} \mathrm{MgI} \mathrm{C}$ is nucleophile because $\mathrm{Mg}$ donate electron $\mathrm{C}$ In $\mathrm{CH}_{3} \mathrm{OH}$ the $\mathrm{O}$ is nuclephile because it have 2 lone pair electron. In $\mathrm{CH}_{3} \mathrm{NH}_{2}$ the $\mathrm{N}$ is nucleophile because it have on lone pair electron.
WB JEET-2019
GENERAL ORGANIC CHEMISTRY
231342
The correct order of increasing acid strength of the compounds
1 B $<$ D $<$ A $<$ C
2 D $<$ A $<$ C $<$ B
3 D $<$ A $<$ B $<$ C
4 A $<$ D $<$ C $<$ B
Explanation:
$+\mathrm{I}$ effect decrease the acidic strength and $-\mathrm{I}$ effect increase the acidic strength and $+\mathrm{R}$ effect also decrease the acidic strength.
Assam CEE-2014
GENERAL ORGANIC CHEMISTRY
231262
Identify the electrophile in the following.
1 $\mathrm{R}-\mathrm{NH}_{2}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{AlCl}_{3}$
4 $\mathrm{CN}^{-}$
Explanation:
$\mathrm{AlCl}_{3}$ is an electron deficient compound and it is an electrophile and other are $\mathrm{R}=\ddot{\mathrm{N}} \mathrm{H}_{2} \mathrm{NH}_{3}$ and $\mathrm{CN}^{-}$ are nucleophile.
231635
The ease of hydrolysis in the compounds $\mathrm{CH}_{3} \mathrm{COCl}$ (I), $\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}$ (II) $\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}$ (III) and $\mathrm{CH}_{3} \mathrm{CONH}_{2}$ (IV) is of the order
1 I $>$ II $>$ III $>$ IV
2 IV $>$ III $>$ II $>$ I
3 I $>$ II $>$ IV $>$ III
4 II $>$ I $>$ IV $>$ III
Explanation:
The ease of hydrolysis of carbonyl compounds depend of the group attached to the carbonyl carbon. Among the given compound, chlorine $(-\mathrm{Cl})$ group is electron withdrawing group which makes the carbonyl group electrophilic. The order of the ease of hydrolysis in the compounds -$\mathrm{CH}_{3} \mathrm{COCl}$ (I) $>\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}>\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}>$ $\mathrm{CH}_{3} \mathrm{CONH}_{2}$ (IV)
WB JEET-2018
GENERAL ORGANIC CHEMISTRY
231636
The indicated atom is not a nucleophilic site in
In $\mathrm{BH}_{4}^{-}$the $\mathrm{B}$ is not nucleophilc its octate is not complete. In the nucleophilc is $\mathrm{H}^{-}$ In $\mathrm{CH}_{3} \mathrm{MgI} \mathrm{C}$ is nucleophile because $\mathrm{Mg}$ donate electron $\mathrm{C}$ In $\mathrm{CH}_{3} \mathrm{OH}$ the $\mathrm{O}$ is nuclephile because it have 2 lone pair electron. In $\mathrm{CH}_{3} \mathrm{NH}_{2}$ the $\mathrm{N}$ is nucleophile because it have on lone pair electron.
WB JEET-2019
GENERAL ORGANIC CHEMISTRY
231342
The correct order of increasing acid strength of the compounds
1 B $<$ D $<$ A $<$ C
2 D $<$ A $<$ C $<$ B
3 D $<$ A $<$ B $<$ C
4 A $<$ D $<$ C $<$ B
Explanation:
$+\mathrm{I}$ effect decrease the acidic strength and $-\mathrm{I}$ effect increase the acidic strength and $+\mathrm{R}$ effect also decrease the acidic strength.
Assam CEE-2014
GENERAL ORGANIC CHEMISTRY
231262
Identify the electrophile in the following.
1 $\mathrm{R}-\mathrm{NH}_{2}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{AlCl}_{3}$
4 $\mathrm{CN}^{-}$
Explanation:
$\mathrm{AlCl}_{3}$ is an electron deficient compound and it is an electrophile and other are $\mathrm{R}=\ddot{\mathrm{N}} \mathrm{H}_{2} \mathrm{NH}_{3}$ and $\mathrm{CN}^{-}$ are nucleophile.
231635
The ease of hydrolysis in the compounds $\mathrm{CH}_{3} \mathrm{COCl}$ (I), $\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}$ (II) $\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}$ (III) and $\mathrm{CH}_{3} \mathrm{CONH}_{2}$ (IV) is of the order
1 I $>$ II $>$ III $>$ IV
2 IV $>$ III $>$ II $>$ I
3 I $>$ II $>$ IV $>$ III
4 II $>$ I $>$ IV $>$ III
Explanation:
The ease of hydrolysis of carbonyl compounds depend of the group attached to the carbonyl carbon. Among the given compound, chlorine $(-\mathrm{Cl})$ group is electron withdrawing group which makes the carbonyl group electrophilic. The order of the ease of hydrolysis in the compounds -$\mathrm{CH}_{3} \mathrm{COCl}$ (I) $>\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}>\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}>$ $\mathrm{CH}_{3} \mathrm{CONH}_{2}$ (IV)
WB JEET-2018
GENERAL ORGANIC CHEMISTRY
231636
The indicated atom is not a nucleophilic site in
In $\mathrm{BH}_{4}^{-}$the $\mathrm{B}$ is not nucleophilc its octate is not complete. In the nucleophilc is $\mathrm{H}^{-}$ In $\mathrm{CH}_{3} \mathrm{MgI} \mathrm{C}$ is nucleophile because $\mathrm{Mg}$ donate electron $\mathrm{C}$ In $\mathrm{CH}_{3} \mathrm{OH}$ the $\mathrm{O}$ is nuclephile because it have 2 lone pair electron. In $\mathrm{CH}_{3} \mathrm{NH}_{2}$ the $\mathrm{N}$ is nucleophile because it have on lone pair electron.
WB JEET-2019
GENERAL ORGANIC CHEMISTRY
231342
The correct order of increasing acid strength of the compounds
1 B $<$ D $<$ A $<$ C
2 D $<$ A $<$ C $<$ B
3 D $<$ A $<$ B $<$ C
4 A $<$ D $<$ C $<$ B
Explanation:
$+\mathrm{I}$ effect decrease the acidic strength and $-\mathrm{I}$ effect increase the acidic strength and $+\mathrm{R}$ effect also decrease the acidic strength.
Assam CEE-2014
GENERAL ORGANIC CHEMISTRY
231262
Identify the electrophile in the following.
1 $\mathrm{R}-\mathrm{NH}_{2}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{AlCl}_{3}$
4 $\mathrm{CN}^{-}$
Explanation:
$\mathrm{AlCl}_{3}$ is an electron deficient compound and it is an electrophile and other are $\mathrm{R}=\ddot{\mathrm{N}} \mathrm{H}_{2} \mathrm{NH}_{3}$ and $\mathrm{CN}^{-}$ are nucleophile.
231635
The ease of hydrolysis in the compounds $\mathrm{CH}_{3} \mathrm{COCl}$ (I), $\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}$ (II) $\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}$ (III) and $\mathrm{CH}_{3} \mathrm{CONH}_{2}$ (IV) is of the order
1 I $>$ II $>$ III $>$ IV
2 IV $>$ III $>$ II $>$ I
3 I $>$ II $>$ IV $>$ III
4 II $>$ I $>$ IV $>$ III
Explanation:
The ease of hydrolysis of carbonyl compounds depend of the group attached to the carbonyl carbon. Among the given compound, chlorine $(-\mathrm{Cl})$ group is electron withdrawing group which makes the carbonyl group electrophilic. The order of the ease of hydrolysis in the compounds -$\mathrm{CH}_{3} \mathrm{COCl}$ (I) $>\mathrm{CH}_{3}-\mathrm{CO}-\mathrm{O}-\mathrm{COCH}_{3}>\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}>$ $\mathrm{CH}_{3} \mathrm{CONH}_{2}$ (IV)
WB JEET-2018
GENERAL ORGANIC CHEMISTRY
231636
The indicated atom is not a nucleophilic site in
In $\mathrm{BH}_{4}^{-}$the $\mathrm{B}$ is not nucleophilc its octate is not complete. In the nucleophilc is $\mathrm{H}^{-}$ In $\mathrm{CH}_{3} \mathrm{MgI} \mathrm{C}$ is nucleophile because $\mathrm{Mg}$ donate electron $\mathrm{C}$ In $\mathrm{CH}_{3} \mathrm{OH}$ the $\mathrm{O}$ is nuclephile because it have 2 lone pair electron. In $\mathrm{CH}_{3} \mathrm{NH}_{2}$ the $\mathrm{N}$ is nucleophile because it have on lone pair electron.
WB JEET-2019
GENERAL ORGANIC CHEMISTRY
231342
The correct order of increasing acid strength of the compounds
1 B $<$ D $<$ A $<$ C
2 D $<$ A $<$ C $<$ B
3 D $<$ A $<$ B $<$ C
4 A $<$ D $<$ C $<$ B
Explanation:
$+\mathrm{I}$ effect decrease the acidic strength and $-\mathrm{I}$ effect increase the acidic strength and $+\mathrm{R}$ effect also decrease the acidic strength.
Assam CEE-2014
GENERAL ORGANIC CHEMISTRY
231262
Identify the electrophile in the following.
1 $\mathrm{R}-\mathrm{NH}_{2}$
2 $\mathrm{NH}_{3}$
3 $\mathrm{AlCl}_{3}$
4 $\mathrm{CN}^{-}$
Explanation:
$\mathrm{AlCl}_{3}$ is an electron deficient compound and it is an electrophile and other are $\mathrm{R}=\ddot{\mathrm{N}} \mathrm{H}_{2} \mathrm{NH}_{3}$ and $\mathrm{CN}^{-}$ are nucleophile.
