NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
GENERAL ORGANIC CHEMISTRY
231569
In which of the following compounds, the $\mathrm{C}-\mathrm{Cl}$ bond ionisation shall give most stable carbonium ion?
1
2
3
4
Explanation:
After the ionisation, the sructure will be- is +I effect and delocalisation increase the stability of carbonium ion $-\mathrm{I}$ effect decrease the stability of carbocation. Hence he structure (4) is most stable. The order of stability is- $4>1>3>2$
NEET-2015
GENERAL ORGANIC CHEMISTRY
231571
Which of the following is the strongest base?
1 $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}$
2 $\mathrm{CH}_{3} \mathrm{NH}_{2}$
3 $\mathrm{NH}_{3}$
4 $\mathrm{CH}_{3} \mathrm{CONH}_{2}$
Explanation:
$+\mathrm{I}$ effect increase the basicity and delocalization decrease the basicity of amine. Hence $\mathrm{CH}_{3} \mathrm{NH}_{2}$ is most basic in nature. The order of basicity is-
MHT CET-2012
GENERAL ORGANIC CHEMISTRY
231573
The strongest acid is
1 Acetic acid
2 Trichloroacetic acid
3 Dichloroacetic acid
4 Monochloroacetic acid
Explanation:
$-\mathrm{I}$ effective group increase the acidity of carboxylic acid. Higher the no. of $-\mathrm{I}$ effective group greater is the acidity. Therefore, trichloroacetic acid is most acidic. The order of acidity is- Trichloro acetic acid $>$ acetic acid.
MHT CET-2012
GENERAL ORGANIC CHEMISTRY
231575
Which of the following carbocations is expected to be most stable?
1
2
3
4
Explanation:
Carbocation ' $\mathrm{C}$ ' is most stable because its distance from $\mathrm{NO}_{2}$ is maximum. Since (+) charge absent of electron. And $\mathrm{NO}_{2}$ is a electrophile and have -I- effect then higher the distance of carbocation greater is the stability. The order of stability is-
231569
In which of the following compounds, the $\mathrm{C}-\mathrm{Cl}$ bond ionisation shall give most stable carbonium ion?
1
2
3
4
Explanation:
After the ionisation, the sructure will be- is +I effect and delocalisation increase the stability of carbonium ion $-\mathrm{I}$ effect decrease the stability of carbocation. Hence he structure (4) is most stable. The order of stability is- $4>1>3>2$
NEET-2015
GENERAL ORGANIC CHEMISTRY
231571
Which of the following is the strongest base?
1 $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}$
2 $\mathrm{CH}_{3} \mathrm{NH}_{2}$
3 $\mathrm{NH}_{3}$
4 $\mathrm{CH}_{3} \mathrm{CONH}_{2}$
Explanation:
$+\mathrm{I}$ effect increase the basicity and delocalization decrease the basicity of amine. Hence $\mathrm{CH}_{3} \mathrm{NH}_{2}$ is most basic in nature. The order of basicity is-
MHT CET-2012
GENERAL ORGANIC CHEMISTRY
231573
The strongest acid is
1 Acetic acid
2 Trichloroacetic acid
3 Dichloroacetic acid
4 Monochloroacetic acid
Explanation:
$-\mathrm{I}$ effective group increase the acidity of carboxylic acid. Higher the no. of $-\mathrm{I}$ effective group greater is the acidity. Therefore, trichloroacetic acid is most acidic. The order of acidity is- Trichloro acetic acid $>$ acetic acid.
MHT CET-2012
GENERAL ORGANIC CHEMISTRY
231575
Which of the following carbocations is expected to be most stable?
1
2
3
4
Explanation:
Carbocation ' $\mathrm{C}$ ' is most stable because its distance from $\mathrm{NO}_{2}$ is maximum. Since (+) charge absent of electron. And $\mathrm{NO}_{2}$ is a electrophile and have -I- effect then higher the distance of carbocation greater is the stability. The order of stability is-
231569
In which of the following compounds, the $\mathrm{C}-\mathrm{Cl}$ bond ionisation shall give most stable carbonium ion?
1
2
3
4
Explanation:
After the ionisation, the sructure will be- is +I effect and delocalisation increase the stability of carbonium ion $-\mathrm{I}$ effect decrease the stability of carbocation. Hence he structure (4) is most stable. The order of stability is- $4>1>3>2$
NEET-2015
GENERAL ORGANIC CHEMISTRY
231571
Which of the following is the strongest base?
1 $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}$
2 $\mathrm{CH}_{3} \mathrm{NH}_{2}$
3 $\mathrm{NH}_{3}$
4 $\mathrm{CH}_{3} \mathrm{CONH}_{2}$
Explanation:
$+\mathrm{I}$ effect increase the basicity and delocalization decrease the basicity of amine. Hence $\mathrm{CH}_{3} \mathrm{NH}_{2}$ is most basic in nature. The order of basicity is-
MHT CET-2012
GENERAL ORGANIC CHEMISTRY
231573
The strongest acid is
1 Acetic acid
2 Trichloroacetic acid
3 Dichloroacetic acid
4 Monochloroacetic acid
Explanation:
$-\mathrm{I}$ effective group increase the acidity of carboxylic acid. Higher the no. of $-\mathrm{I}$ effective group greater is the acidity. Therefore, trichloroacetic acid is most acidic. The order of acidity is- Trichloro acetic acid $>$ acetic acid.
MHT CET-2012
GENERAL ORGANIC CHEMISTRY
231575
Which of the following carbocations is expected to be most stable?
1
2
3
4
Explanation:
Carbocation ' $\mathrm{C}$ ' is most stable because its distance from $\mathrm{NO}_{2}$ is maximum. Since (+) charge absent of electron. And $\mathrm{NO}_{2}$ is a electrophile and have -I- effect then higher the distance of carbocation greater is the stability. The order of stability is-
231569
In which of the following compounds, the $\mathrm{C}-\mathrm{Cl}$ bond ionisation shall give most stable carbonium ion?
1
2
3
4
Explanation:
After the ionisation, the sructure will be- is +I effect and delocalisation increase the stability of carbonium ion $-\mathrm{I}$ effect decrease the stability of carbocation. Hence he structure (4) is most stable. The order of stability is- $4>1>3>2$
NEET-2015
GENERAL ORGANIC CHEMISTRY
231571
Which of the following is the strongest base?
1 $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}$
2 $\mathrm{CH}_{3} \mathrm{NH}_{2}$
3 $\mathrm{NH}_{3}$
4 $\mathrm{CH}_{3} \mathrm{CONH}_{2}$
Explanation:
$+\mathrm{I}$ effect increase the basicity and delocalization decrease the basicity of amine. Hence $\mathrm{CH}_{3} \mathrm{NH}_{2}$ is most basic in nature. The order of basicity is-
MHT CET-2012
GENERAL ORGANIC CHEMISTRY
231573
The strongest acid is
1 Acetic acid
2 Trichloroacetic acid
3 Dichloroacetic acid
4 Monochloroacetic acid
Explanation:
$-\mathrm{I}$ effective group increase the acidity of carboxylic acid. Higher the no. of $-\mathrm{I}$ effective group greater is the acidity. Therefore, trichloroacetic acid is most acidic. The order of acidity is- Trichloro acetic acid $>$ acetic acid.
MHT CET-2012
GENERAL ORGANIC CHEMISTRY
231575
Which of the following carbocations is expected to be most stable?
1
2
3
4
Explanation:
Carbocation ' $\mathrm{C}$ ' is most stable because its distance from $\mathrm{NO}_{2}$ is maximum. Since (+) charge absent of electron. And $\mathrm{NO}_{2}$ is a electrophile and have -I- effect then higher the distance of carbocation greater is the stability. The order of stability is-
is
