231558
In case of substituted anline the group which decreases the basic strength is
1 $-\mathrm{OCH}_{3}$
2 $-\mathrm{CH}_{3}$
3 $-\mathrm{NH}_{2}$
4 $-\mathrm{C}_{6} \mathrm{H}_{5}$
Explanation:
All structure is given below- The $\mathrm{C}_{6} \mathrm{H}_{5}$ group decrease the basicity because it delocalized the lone pair electron of N. Other all group increase the basicity by $+\mathrm{M}$ and $+\mathrm{I}$ effect.
MHT CET-2017
GENERAL ORGANIC CHEMISTRY
231559
Which among the following phenolic compound is most acidic in nature?
1 p-aminophenol
2 Phenol
3 m-nitrophenol
4 p-nitrophenol
Explanation:
$-\mathrm{I}$ and $-\mathrm{M}$ effect increase the acidity. $-\mathrm{M}$ is dominating factor over the $-\mathrm{I}$. $+\mathrm{M}$ decrease the aciditly. Hence p-nitrophenol is most acidic in nature.. The order of acidity is-
MHT CET-2016
GENERAL ORGANIC CHEMISTRY
231562
The correct order of the basic strength of methyl substituted amines in aqueous solution is
$\mathrm{K}_{\mathrm{b}}$ methyl substituted amine in aqueous solution depend upon combined effect of $+\mathrm{I}$ of methyl and solubility in $\mathrm{H}_{2} \mathrm{O}$ by $\mathrm{H}$-bonding. The correct order of the basic strength of methyl substituted amines in aqueous solution is. $\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}>\mathrm{CH}_{3} \mathrm{NH}_{2}>\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$
NEET-2019
GENERAL ORGANIC CHEMISTRY
231564
Which of the following species is not electrophilic in nature?
1 $\stackrel{+}{\mathrm{C}} \mathrm{l}$
2 $\mathrm{BH}_{3}$
3 $\mathrm{H}_{3} \mathrm{O}^{+}$
4 $\stackrel{+}{\mathrm{N}} \mathrm{O}_{2}$
Explanation:
$\mathrm{H}_{3} \mathrm{O}$ is not a electrophile because it is present as $\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}$ $\mathrm{Cl}^{+}$is a electrophile because it have a $\oplus$ charge and vacant d - orbital. $\mathrm{BH}_{3}$ is a electrophile because it have vacant p-orbital and its octet is not complete. $\mathrm{NO}_{2}$ is a strong electrophile
AIPMT -2010
GENERAL ORGANIC CHEMISTRY
231612
Which of the following compounds is most acidic?
Electron withdrawing group increases acidic characters due to $-\mathrm{I}$ and $-\mathrm{R}$ effect of $\mathrm{NO}_{2}$. As $\mathrm{NO}_{2}$ is a strong electrons withdrawing group, it pulls the electron density towards itself, weak the $-\mathrm{OH}$ bond. Hence, increases the acidic nature.
231558
In case of substituted anline the group which decreases the basic strength is
1 $-\mathrm{OCH}_{3}$
2 $-\mathrm{CH}_{3}$
3 $-\mathrm{NH}_{2}$
4 $-\mathrm{C}_{6} \mathrm{H}_{5}$
Explanation:
All structure is given below- The $\mathrm{C}_{6} \mathrm{H}_{5}$ group decrease the basicity because it delocalized the lone pair electron of N. Other all group increase the basicity by $+\mathrm{M}$ and $+\mathrm{I}$ effect.
MHT CET-2017
GENERAL ORGANIC CHEMISTRY
231559
Which among the following phenolic compound is most acidic in nature?
1 p-aminophenol
2 Phenol
3 m-nitrophenol
4 p-nitrophenol
Explanation:
$-\mathrm{I}$ and $-\mathrm{M}$ effect increase the acidity. $-\mathrm{M}$ is dominating factor over the $-\mathrm{I}$. $+\mathrm{M}$ decrease the aciditly. Hence p-nitrophenol is most acidic in nature.. The order of acidity is-
MHT CET-2016
GENERAL ORGANIC CHEMISTRY
231562
The correct order of the basic strength of methyl substituted amines in aqueous solution is
$\mathrm{K}_{\mathrm{b}}$ methyl substituted amine in aqueous solution depend upon combined effect of $+\mathrm{I}$ of methyl and solubility in $\mathrm{H}_{2} \mathrm{O}$ by $\mathrm{H}$-bonding. The correct order of the basic strength of methyl substituted amines in aqueous solution is. $\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}>\mathrm{CH}_{3} \mathrm{NH}_{2}>\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$
NEET-2019
GENERAL ORGANIC CHEMISTRY
231564
Which of the following species is not electrophilic in nature?
1 $\stackrel{+}{\mathrm{C}} \mathrm{l}$
2 $\mathrm{BH}_{3}$
3 $\mathrm{H}_{3} \mathrm{O}^{+}$
4 $\stackrel{+}{\mathrm{N}} \mathrm{O}_{2}$
Explanation:
$\mathrm{H}_{3} \mathrm{O}$ is not a electrophile because it is present as $\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}$ $\mathrm{Cl}^{+}$is a electrophile because it have a $\oplus$ charge and vacant d - orbital. $\mathrm{BH}_{3}$ is a electrophile because it have vacant p-orbital and its octet is not complete. $\mathrm{NO}_{2}$ is a strong electrophile
AIPMT -2010
GENERAL ORGANIC CHEMISTRY
231612
Which of the following compounds is most acidic?
Electron withdrawing group increases acidic characters due to $-\mathrm{I}$ and $-\mathrm{R}$ effect of $\mathrm{NO}_{2}$. As $\mathrm{NO}_{2}$ is a strong electrons withdrawing group, it pulls the electron density towards itself, weak the $-\mathrm{OH}$ bond. Hence, increases the acidic nature.
NEET Test Series from KOTA - 10 Papers In MS WORD
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GENERAL ORGANIC CHEMISTRY
231558
In case of substituted anline the group which decreases the basic strength is
1 $-\mathrm{OCH}_{3}$
2 $-\mathrm{CH}_{3}$
3 $-\mathrm{NH}_{2}$
4 $-\mathrm{C}_{6} \mathrm{H}_{5}$
Explanation:
All structure is given below- The $\mathrm{C}_{6} \mathrm{H}_{5}$ group decrease the basicity because it delocalized the lone pair electron of N. Other all group increase the basicity by $+\mathrm{M}$ and $+\mathrm{I}$ effect.
MHT CET-2017
GENERAL ORGANIC CHEMISTRY
231559
Which among the following phenolic compound is most acidic in nature?
1 p-aminophenol
2 Phenol
3 m-nitrophenol
4 p-nitrophenol
Explanation:
$-\mathrm{I}$ and $-\mathrm{M}$ effect increase the acidity. $-\mathrm{M}$ is dominating factor over the $-\mathrm{I}$. $+\mathrm{M}$ decrease the aciditly. Hence p-nitrophenol is most acidic in nature.. The order of acidity is-
MHT CET-2016
GENERAL ORGANIC CHEMISTRY
231562
The correct order of the basic strength of methyl substituted amines in aqueous solution is
$\mathrm{K}_{\mathrm{b}}$ methyl substituted amine in aqueous solution depend upon combined effect of $+\mathrm{I}$ of methyl and solubility in $\mathrm{H}_{2} \mathrm{O}$ by $\mathrm{H}$-bonding. The correct order of the basic strength of methyl substituted amines in aqueous solution is. $\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}>\mathrm{CH}_{3} \mathrm{NH}_{2}>\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$
NEET-2019
GENERAL ORGANIC CHEMISTRY
231564
Which of the following species is not electrophilic in nature?
1 $\stackrel{+}{\mathrm{C}} \mathrm{l}$
2 $\mathrm{BH}_{3}$
3 $\mathrm{H}_{3} \mathrm{O}^{+}$
4 $\stackrel{+}{\mathrm{N}} \mathrm{O}_{2}$
Explanation:
$\mathrm{H}_{3} \mathrm{O}$ is not a electrophile because it is present as $\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}$ $\mathrm{Cl}^{+}$is a electrophile because it have a $\oplus$ charge and vacant d - orbital. $\mathrm{BH}_{3}$ is a electrophile because it have vacant p-orbital and its octet is not complete. $\mathrm{NO}_{2}$ is a strong electrophile
AIPMT -2010
GENERAL ORGANIC CHEMISTRY
231612
Which of the following compounds is most acidic?
Electron withdrawing group increases acidic characters due to $-\mathrm{I}$ and $-\mathrm{R}$ effect of $\mathrm{NO}_{2}$. As $\mathrm{NO}_{2}$ is a strong electrons withdrawing group, it pulls the electron density towards itself, weak the $-\mathrm{OH}$ bond. Hence, increases the acidic nature.
231558
In case of substituted anline the group which decreases the basic strength is
1 $-\mathrm{OCH}_{3}$
2 $-\mathrm{CH}_{3}$
3 $-\mathrm{NH}_{2}$
4 $-\mathrm{C}_{6} \mathrm{H}_{5}$
Explanation:
All structure is given below- The $\mathrm{C}_{6} \mathrm{H}_{5}$ group decrease the basicity because it delocalized the lone pair electron of N. Other all group increase the basicity by $+\mathrm{M}$ and $+\mathrm{I}$ effect.
MHT CET-2017
GENERAL ORGANIC CHEMISTRY
231559
Which among the following phenolic compound is most acidic in nature?
1 p-aminophenol
2 Phenol
3 m-nitrophenol
4 p-nitrophenol
Explanation:
$-\mathrm{I}$ and $-\mathrm{M}$ effect increase the acidity. $-\mathrm{M}$ is dominating factor over the $-\mathrm{I}$. $+\mathrm{M}$ decrease the aciditly. Hence p-nitrophenol is most acidic in nature.. The order of acidity is-
MHT CET-2016
GENERAL ORGANIC CHEMISTRY
231562
The correct order of the basic strength of methyl substituted amines in aqueous solution is
$\mathrm{K}_{\mathrm{b}}$ methyl substituted amine in aqueous solution depend upon combined effect of $+\mathrm{I}$ of methyl and solubility in $\mathrm{H}_{2} \mathrm{O}$ by $\mathrm{H}$-bonding. The correct order of the basic strength of methyl substituted amines in aqueous solution is. $\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}>\mathrm{CH}_{3} \mathrm{NH}_{2}>\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$
NEET-2019
GENERAL ORGANIC CHEMISTRY
231564
Which of the following species is not electrophilic in nature?
1 $\stackrel{+}{\mathrm{C}} \mathrm{l}$
2 $\mathrm{BH}_{3}$
3 $\mathrm{H}_{3} \mathrm{O}^{+}$
4 $\stackrel{+}{\mathrm{N}} \mathrm{O}_{2}$
Explanation:
$\mathrm{H}_{3} \mathrm{O}$ is not a electrophile because it is present as $\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}$ $\mathrm{Cl}^{+}$is a electrophile because it have a $\oplus$ charge and vacant d - orbital. $\mathrm{BH}_{3}$ is a electrophile because it have vacant p-orbital and its octet is not complete. $\mathrm{NO}_{2}$ is a strong electrophile
AIPMT -2010
GENERAL ORGANIC CHEMISTRY
231612
Which of the following compounds is most acidic?
Electron withdrawing group increases acidic characters due to $-\mathrm{I}$ and $-\mathrm{R}$ effect of $\mathrm{NO}_{2}$. As $\mathrm{NO}_{2}$ is a strong electrons withdrawing group, it pulls the electron density towards itself, weak the $-\mathrm{OH}$ bond. Hence, increases the acidic nature.
231558
In case of substituted anline the group which decreases the basic strength is
1 $-\mathrm{OCH}_{3}$
2 $-\mathrm{CH}_{3}$
3 $-\mathrm{NH}_{2}$
4 $-\mathrm{C}_{6} \mathrm{H}_{5}$
Explanation:
All structure is given below- The $\mathrm{C}_{6} \mathrm{H}_{5}$ group decrease the basicity because it delocalized the lone pair electron of N. Other all group increase the basicity by $+\mathrm{M}$ and $+\mathrm{I}$ effect.
MHT CET-2017
GENERAL ORGANIC CHEMISTRY
231559
Which among the following phenolic compound is most acidic in nature?
1 p-aminophenol
2 Phenol
3 m-nitrophenol
4 p-nitrophenol
Explanation:
$-\mathrm{I}$ and $-\mathrm{M}$ effect increase the acidity. $-\mathrm{M}$ is dominating factor over the $-\mathrm{I}$. $+\mathrm{M}$ decrease the aciditly. Hence p-nitrophenol is most acidic in nature.. The order of acidity is-
MHT CET-2016
GENERAL ORGANIC CHEMISTRY
231562
The correct order of the basic strength of methyl substituted amines in aqueous solution is
$\mathrm{K}_{\mathrm{b}}$ methyl substituted amine in aqueous solution depend upon combined effect of $+\mathrm{I}$ of methyl and solubility in $\mathrm{H}_{2} \mathrm{O}$ by $\mathrm{H}$-bonding. The correct order of the basic strength of methyl substituted amines in aqueous solution is. $\left(\mathrm{CH}_{3}\right)_{2} \mathrm{NH}>\mathrm{CH}_{3} \mathrm{NH}_{2}>\left(\mathrm{CH}_{3}\right)_{3} \mathrm{~N}$
NEET-2019
GENERAL ORGANIC CHEMISTRY
231564
Which of the following species is not electrophilic in nature?
1 $\stackrel{+}{\mathrm{C}} \mathrm{l}$
2 $\mathrm{BH}_{3}$
3 $\mathrm{H}_{3} \mathrm{O}^{+}$
4 $\stackrel{+}{\mathrm{N}} \mathrm{O}_{2}$
Explanation:
$\mathrm{H}_{3} \mathrm{O}$ is not a electrophile because it is present as $\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}$ $\mathrm{Cl}^{+}$is a electrophile because it have a $\oplus$ charge and vacant d - orbital. $\mathrm{BH}_{3}$ is a electrophile because it have vacant p-orbital and its octet is not complete. $\mathrm{NO}_{2}$ is a strong electrophile
AIPMT -2010
GENERAL ORGANIC CHEMISTRY
231612
Which of the following compounds is most acidic?
Electron withdrawing group increases acidic characters due to $-\mathrm{I}$ and $-\mathrm{R}$ effect of $\mathrm{NO}_{2}$. As $\mathrm{NO}_{2}$ is a strong electrons withdrawing group, it pulls the electron density towards itself, weak the $-\mathrm{OH}$ bond. Hence, increases the acidic nature.
The $\mathrm{C}_{6} \mathrm{H}_{5}$ group decrease the basicity because it delocalized the lone pair electron of N. Other all group increase the basicity by $+\mathrm{M}$ and $+\mathrm{I}$ effect.
