231683
In the carbylamines reaction, $R-X$ converted to $R-Y$ via the intermediate $Z$. $R-X$, $\mathrm{R}-\mathrm{Y}$ and $\mathrm{Z}$, respectively, are
The Carbylamines reaction- it is also known as Hoffmann's isocyanides synthesis. It is the synthesis of isocyanides by the reaction of primary amine chloroform and base. The conversion involves the intermediacy of dichlorocarbene complete reaction
CG PET- 2011
GENERAL ORGANIC CHEMISTRY
231685
Which of the following statement is incorrect for bimolecular nucleophilic substation reaction $\left(\mathrm{S}_{\mathrm{N}} 2\right)$ ?
1 It is a second order reaction
2 It $\mathrm{S}_{\mathrm{N}} 2$ reaction the substrate does not undergo heterolytic fission
3 The rate of $\mathrm{S}_{\mathrm{N}} 2$ reaction does not depends on concentrations of both substrate and nucleophilic reagent
4 $\mathrm{S}_{\mathrm{N}} 2$ reaction occurs in single step without forming intermediate
Explanation:
The $\mathrm{S}_{\mathrm{N}} 2$ reaction are those nucleophilic substitution reaction in which the rate of reaction depends upon the concentration of the substitution as well as concentration of the attacking nucleophile. So, in the question, option (c) is correct because in this case it will depend on both because of bimolecular reaction and single step reaction.
GUJCET-2014
GENERAL ORGANIC CHEMISTRY
231691
The increasing order of nucleophilicity of the following nucleophiles is
1 (1) $<$ (4) $<$ (3) $<$ (2)
2 (2) $<(3)<(1)<(4)$
3 (4) $<(1)<(3)<(2)$
4 (2) $<$ (3) $<$ (4) $<$ (1)
Explanation:
Charged species have high nucleophilicity than nuclear species because ion pair donating tendancy on oxygen is reduced nucleophilicity. Nucleophilicity is the process to give hydrogen or remove hydrogen. $2<3<1<4 \rightarrow$ is the increasing order of nucleophiles.
JEE Main 2019
GENERAL ORGANIC CHEMISTRY
231693
The correct order of increasing basicity of the given conjugate bases $\left(\mathrm{R}=\mathrm{CH}_{3}\right)$ is
The order of increasing basicity can be illustrated on the basis of the acidity of the acids of given conjugate base. If the acid is stronger then the conjugate base will be weaker. Though, $\mathrm{RCOOH}$ is the strongest acid, while $\mathrm{RCOO}^{-}$is the weakest base. Acetylene is also acidic in nature due to sp hybridized carbon, therefore it is a weak base. It is stronger than $\mathrm{RCOO}^{-}$. As we know that $\mathrm{sp}^{3}$ carbon is less electronegative than $\mathrm{sp}^{3}$ nitrogen. Therefore, $\mathrm{R}^{-}$will be more basic than $\mathrm{NH}_{2}^{-}$.
AIEEE 2010
GENERAL ORGANIC CHEMISTRY
231695
Which one among the following resonating structures is not correct?
1
2
3
4
Explanation:
(A) : This is not correct structure because two positive charge on carbon atom present adjacent to each other.
231683
In the carbylamines reaction, $R-X$ converted to $R-Y$ via the intermediate $Z$. $R-X$, $\mathrm{R}-\mathrm{Y}$ and $\mathrm{Z}$, respectively, are
The Carbylamines reaction- it is also known as Hoffmann's isocyanides synthesis. It is the synthesis of isocyanides by the reaction of primary amine chloroform and base. The conversion involves the intermediacy of dichlorocarbene complete reaction
CG PET- 2011
GENERAL ORGANIC CHEMISTRY
231685
Which of the following statement is incorrect for bimolecular nucleophilic substation reaction $\left(\mathrm{S}_{\mathrm{N}} 2\right)$ ?
1 It is a second order reaction
2 It $\mathrm{S}_{\mathrm{N}} 2$ reaction the substrate does not undergo heterolytic fission
3 The rate of $\mathrm{S}_{\mathrm{N}} 2$ reaction does not depends on concentrations of both substrate and nucleophilic reagent
4 $\mathrm{S}_{\mathrm{N}} 2$ reaction occurs in single step without forming intermediate
Explanation:
The $\mathrm{S}_{\mathrm{N}} 2$ reaction are those nucleophilic substitution reaction in which the rate of reaction depends upon the concentration of the substitution as well as concentration of the attacking nucleophile. So, in the question, option (c) is correct because in this case it will depend on both because of bimolecular reaction and single step reaction.
GUJCET-2014
GENERAL ORGANIC CHEMISTRY
231691
The increasing order of nucleophilicity of the following nucleophiles is
1 (1) $<$ (4) $<$ (3) $<$ (2)
2 (2) $<(3)<(1)<(4)$
3 (4) $<(1)<(3)<(2)$
4 (2) $<$ (3) $<$ (4) $<$ (1)
Explanation:
Charged species have high nucleophilicity than nuclear species because ion pair donating tendancy on oxygen is reduced nucleophilicity. Nucleophilicity is the process to give hydrogen or remove hydrogen. $2<3<1<4 \rightarrow$ is the increasing order of nucleophiles.
JEE Main 2019
GENERAL ORGANIC CHEMISTRY
231693
The correct order of increasing basicity of the given conjugate bases $\left(\mathrm{R}=\mathrm{CH}_{3}\right)$ is
The order of increasing basicity can be illustrated on the basis of the acidity of the acids of given conjugate base. If the acid is stronger then the conjugate base will be weaker. Though, $\mathrm{RCOOH}$ is the strongest acid, while $\mathrm{RCOO}^{-}$is the weakest base. Acetylene is also acidic in nature due to sp hybridized carbon, therefore it is a weak base. It is stronger than $\mathrm{RCOO}^{-}$. As we know that $\mathrm{sp}^{3}$ carbon is less electronegative than $\mathrm{sp}^{3}$ nitrogen. Therefore, $\mathrm{R}^{-}$will be more basic than $\mathrm{NH}_{2}^{-}$.
AIEEE 2010
GENERAL ORGANIC CHEMISTRY
231695
Which one among the following resonating structures is not correct?
1
2
3
4
Explanation:
(A) : This is not correct structure because two positive charge on carbon atom present adjacent to each other.
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
GENERAL ORGANIC CHEMISTRY
231683
In the carbylamines reaction, $R-X$ converted to $R-Y$ via the intermediate $Z$. $R-X$, $\mathrm{R}-\mathrm{Y}$ and $\mathrm{Z}$, respectively, are
The Carbylamines reaction- it is also known as Hoffmann's isocyanides synthesis. It is the synthesis of isocyanides by the reaction of primary amine chloroform and base. The conversion involves the intermediacy of dichlorocarbene complete reaction
CG PET- 2011
GENERAL ORGANIC CHEMISTRY
231685
Which of the following statement is incorrect for bimolecular nucleophilic substation reaction $\left(\mathrm{S}_{\mathrm{N}} 2\right)$ ?
1 It is a second order reaction
2 It $\mathrm{S}_{\mathrm{N}} 2$ reaction the substrate does not undergo heterolytic fission
3 The rate of $\mathrm{S}_{\mathrm{N}} 2$ reaction does not depends on concentrations of both substrate and nucleophilic reagent
4 $\mathrm{S}_{\mathrm{N}} 2$ reaction occurs in single step without forming intermediate
Explanation:
The $\mathrm{S}_{\mathrm{N}} 2$ reaction are those nucleophilic substitution reaction in which the rate of reaction depends upon the concentration of the substitution as well as concentration of the attacking nucleophile. So, in the question, option (c) is correct because in this case it will depend on both because of bimolecular reaction and single step reaction.
GUJCET-2014
GENERAL ORGANIC CHEMISTRY
231691
The increasing order of nucleophilicity of the following nucleophiles is
1 (1) $<$ (4) $<$ (3) $<$ (2)
2 (2) $<(3)<(1)<(4)$
3 (4) $<(1)<(3)<(2)$
4 (2) $<$ (3) $<$ (4) $<$ (1)
Explanation:
Charged species have high nucleophilicity than nuclear species because ion pair donating tendancy on oxygen is reduced nucleophilicity. Nucleophilicity is the process to give hydrogen or remove hydrogen. $2<3<1<4 \rightarrow$ is the increasing order of nucleophiles.
JEE Main 2019
GENERAL ORGANIC CHEMISTRY
231693
The correct order of increasing basicity of the given conjugate bases $\left(\mathrm{R}=\mathrm{CH}_{3}\right)$ is
The order of increasing basicity can be illustrated on the basis of the acidity of the acids of given conjugate base. If the acid is stronger then the conjugate base will be weaker. Though, $\mathrm{RCOOH}$ is the strongest acid, while $\mathrm{RCOO}^{-}$is the weakest base. Acetylene is also acidic in nature due to sp hybridized carbon, therefore it is a weak base. It is stronger than $\mathrm{RCOO}^{-}$. As we know that $\mathrm{sp}^{3}$ carbon is less electronegative than $\mathrm{sp}^{3}$ nitrogen. Therefore, $\mathrm{R}^{-}$will be more basic than $\mathrm{NH}_{2}^{-}$.
AIEEE 2010
GENERAL ORGANIC CHEMISTRY
231695
Which one among the following resonating structures is not correct?
1
2
3
4
Explanation:
(A) : This is not correct structure because two positive charge on carbon atom present adjacent to each other.
231683
In the carbylamines reaction, $R-X$ converted to $R-Y$ via the intermediate $Z$. $R-X$, $\mathrm{R}-\mathrm{Y}$ and $\mathrm{Z}$, respectively, are
The Carbylamines reaction- it is also known as Hoffmann's isocyanides synthesis. It is the synthesis of isocyanides by the reaction of primary amine chloroform and base. The conversion involves the intermediacy of dichlorocarbene complete reaction
CG PET- 2011
GENERAL ORGANIC CHEMISTRY
231685
Which of the following statement is incorrect for bimolecular nucleophilic substation reaction $\left(\mathrm{S}_{\mathrm{N}} 2\right)$ ?
1 It is a second order reaction
2 It $\mathrm{S}_{\mathrm{N}} 2$ reaction the substrate does not undergo heterolytic fission
3 The rate of $\mathrm{S}_{\mathrm{N}} 2$ reaction does not depends on concentrations of both substrate and nucleophilic reagent
4 $\mathrm{S}_{\mathrm{N}} 2$ reaction occurs in single step without forming intermediate
Explanation:
The $\mathrm{S}_{\mathrm{N}} 2$ reaction are those nucleophilic substitution reaction in which the rate of reaction depends upon the concentration of the substitution as well as concentration of the attacking nucleophile. So, in the question, option (c) is correct because in this case it will depend on both because of bimolecular reaction and single step reaction.
GUJCET-2014
GENERAL ORGANIC CHEMISTRY
231691
The increasing order of nucleophilicity of the following nucleophiles is
1 (1) $<$ (4) $<$ (3) $<$ (2)
2 (2) $<(3)<(1)<(4)$
3 (4) $<(1)<(3)<(2)$
4 (2) $<$ (3) $<$ (4) $<$ (1)
Explanation:
Charged species have high nucleophilicity than nuclear species because ion pair donating tendancy on oxygen is reduced nucleophilicity. Nucleophilicity is the process to give hydrogen or remove hydrogen. $2<3<1<4 \rightarrow$ is the increasing order of nucleophiles.
JEE Main 2019
GENERAL ORGANIC CHEMISTRY
231693
The correct order of increasing basicity of the given conjugate bases $\left(\mathrm{R}=\mathrm{CH}_{3}\right)$ is
The order of increasing basicity can be illustrated on the basis of the acidity of the acids of given conjugate base. If the acid is stronger then the conjugate base will be weaker. Though, $\mathrm{RCOOH}$ is the strongest acid, while $\mathrm{RCOO}^{-}$is the weakest base. Acetylene is also acidic in nature due to sp hybridized carbon, therefore it is a weak base. It is stronger than $\mathrm{RCOO}^{-}$. As we know that $\mathrm{sp}^{3}$ carbon is less electronegative than $\mathrm{sp}^{3}$ nitrogen. Therefore, $\mathrm{R}^{-}$will be more basic than $\mathrm{NH}_{2}^{-}$.
AIEEE 2010
GENERAL ORGANIC CHEMISTRY
231695
Which one among the following resonating structures is not correct?
1
2
3
4
Explanation:
(A) : This is not correct structure because two positive charge on carbon atom present adjacent to each other.
231683
In the carbylamines reaction, $R-X$ converted to $R-Y$ via the intermediate $Z$. $R-X$, $\mathrm{R}-\mathrm{Y}$ and $\mathrm{Z}$, respectively, are
The Carbylamines reaction- it is also known as Hoffmann's isocyanides synthesis. It is the synthesis of isocyanides by the reaction of primary amine chloroform and base. The conversion involves the intermediacy of dichlorocarbene complete reaction
CG PET- 2011
GENERAL ORGANIC CHEMISTRY
231685
Which of the following statement is incorrect for bimolecular nucleophilic substation reaction $\left(\mathrm{S}_{\mathrm{N}} 2\right)$ ?
1 It is a second order reaction
2 It $\mathrm{S}_{\mathrm{N}} 2$ reaction the substrate does not undergo heterolytic fission
3 The rate of $\mathrm{S}_{\mathrm{N}} 2$ reaction does not depends on concentrations of both substrate and nucleophilic reagent
4 $\mathrm{S}_{\mathrm{N}} 2$ reaction occurs in single step without forming intermediate
Explanation:
The $\mathrm{S}_{\mathrm{N}} 2$ reaction are those nucleophilic substitution reaction in which the rate of reaction depends upon the concentration of the substitution as well as concentration of the attacking nucleophile. So, in the question, option (c) is correct because in this case it will depend on both because of bimolecular reaction and single step reaction.
GUJCET-2014
GENERAL ORGANIC CHEMISTRY
231691
The increasing order of nucleophilicity of the following nucleophiles is
1 (1) $<$ (4) $<$ (3) $<$ (2)
2 (2) $<(3)<(1)<(4)$
3 (4) $<(1)<(3)<(2)$
4 (2) $<$ (3) $<$ (4) $<$ (1)
Explanation:
Charged species have high nucleophilicity than nuclear species because ion pair donating tendancy on oxygen is reduced nucleophilicity. Nucleophilicity is the process to give hydrogen or remove hydrogen. $2<3<1<4 \rightarrow$ is the increasing order of nucleophiles.
JEE Main 2019
GENERAL ORGANIC CHEMISTRY
231693
The correct order of increasing basicity of the given conjugate bases $\left(\mathrm{R}=\mathrm{CH}_{3}\right)$ is
The order of increasing basicity can be illustrated on the basis of the acidity of the acids of given conjugate base. If the acid is stronger then the conjugate base will be weaker. Though, $\mathrm{RCOOH}$ is the strongest acid, while $\mathrm{RCOO}^{-}$is the weakest base. Acetylene is also acidic in nature due to sp hybridized carbon, therefore it is a weak base. It is stronger than $\mathrm{RCOO}^{-}$. As we know that $\mathrm{sp}^{3}$ carbon is less electronegative than $\mathrm{sp}^{3}$ nitrogen. Therefore, $\mathrm{R}^{-}$will be more basic than $\mathrm{NH}_{2}^{-}$.
AIEEE 2010
GENERAL ORGANIC CHEMISTRY
231695
Which one among the following resonating structures is not correct?
1
2
3
4
Explanation:
(A) : This is not correct structure because two positive charge on carbon atom present adjacent to each other.
