231656
**Assertion:** Alkyl carbanions like ammonia have pyramidal shape. **Reason:** The carbon atom carrying negative charge has an octet of electrons.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If the Assertion is incorrect but the Reason is correct.
Explanation:
The structure of ammonia is pyramidal shape with $\mathrm{sp}^{3}$ hybridisation. The option (b) is correct due to correct explanation of greater lone pair bond pair repulsion, carbanions assume pyramidal shape.
AIIMS- 2015
GENERAL ORGANIC CHEMISTRY
231657
Which one of the following compounds is resistant to nucleophilic attack by hydroxyl ions?
1 Methyl acetate
2 Acetonitrile
3 Diethyl ether
4 Acetamide
Explanation:
Acetamide acetonitrile and methyl acetate contains an unsaturated carbon atom which can be easily attacked by nucleophilic such as hydroxide ion These group also contain $\mathrm{C}=\mathrm{O}$ group in which oxygen is electronegatives therefore due to deficiency of carbon electron carbon electron deficient on which nucleophile can attack. Diethyl does not show nucleophilic attack due to absence of multiple bond. Other compound have multiple bonded carbon atom and bears partial positive charge Therefore they undergo nucleophilic attack by $\mathrm{OH}^{-}$ions.
AIIMS-2010
GENERAL ORGANIC CHEMISTRY
231658
Among the following the most stable free radical is
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHCH}_{3}$ is most stable free radical due to resonance and $+\mathrm{I}$-effect.
SRMJEEE - 2012
GENERAL ORGANIC CHEMISTRY
231664
Wilkinson's catalyst is used for
1 Epoxidation
2 Hydrogenation
3 Polymerization
4 Substitution
Explanation:
Wilkinson Catalyst- It is prepared by heating rhodium chloride with triphenyl phosphine in boiling ethanol Its chemical compound is known as triphenyl phosphine chloro rhodium. It is used for hydrogenation of alkene Example
AMU-2013
GENERAL ORGANIC CHEMISTRY
231736
Which of the following is produced during nucleophilic reaction ?
1 Atoms
2 Anion
3 Free radical
4 Cation
Explanation:
(B):Anions are formed during nucleophilic reactions as
231656
**Assertion:** Alkyl carbanions like ammonia have pyramidal shape. **Reason:** The carbon atom carrying negative charge has an octet of electrons.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If the Assertion is incorrect but the Reason is correct.
Explanation:
The structure of ammonia is pyramidal shape with $\mathrm{sp}^{3}$ hybridisation. The option (b) is correct due to correct explanation of greater lone pair bond pair repulsion, carbanions assume pyramidal shape.
AIIMS- 2015
GENERAL ORGANIC CHEMISTRY
231657
Which one of the following compounds is resistant to nucleophilic attack by hydroxyl ions?
1 Methyl acetate
2 Acetonitrile
3 Diethyl ether
4 Acetamide
Explanation:
Acetamide acetonitrile and methyl acetate contains an unsaturated carbon atom which can be easily attacked by nucleophilic such as hydroxide ion These group also contain $\mathrm{C}=\mathrm{O}$ group in which oxygen is electronegatives therefore due to deficiency of carbon electron carbon electron deficient on which nucleophile can attack. Diethyl does not show nucleophilic attack due to absence of multiple bond. Other compound have multiple bonded carbon atom and bears partial positive charge Therefore they undergo nucleophilic attack by $\mathrm{OH}^{-}$ions.
AIIMS-2010
GENERAL ORGANIC CHEMISTRY
231658
Among the following the most stable free radical is
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHCH}_{3}$ is most stable free radical due to resonance and $+\mathrm{I}$-effect.
SRMJEEE - 2012
GENERAL ORGANIC CHEMISTRY
231664
Wilkinson's catalyst is used for
1 Epoxidation
2 Hydrogenation
3 Polymerization
4 Substitution
Explanation:
Wilkinson Catalyst- It is prepared by heating rhodium chloride with triphenyl phosphine in boiling ethanol Its chemical compound is known as triphenyl phosphine chloro rhodium. It is used for hydrogenation of alkene Example
AMU-2013
GENERAL ORGANIC CHEMISTRY
231736
Which of the following is produced during nucleophilic reaction ?
1 Atoms
2 Anion
3 Free radical
4 Cation
Explanation:
(B):Anions are formed during nucleophilic reactions as
231656
**Assertion:** Alkyl carbanions like ammonia have pyramidal shape. **Reason:** The carbon atom carrying negative charge has an octet of electrons.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If the Assertion is incorrect but the Reason is correct.
Explanation:
The structure of ammonia is pyramidal shape with $\mathrm{sp}^{3}$ hybridisation. The option (b) is correct due to correct explanation of greater lone pair bond pair repulsion, carbanions assume pyramidal shape.
AIIMS- 2015
GENERAL ORGANIC CHEMISTRY
231657
Which one of the following compounds is resistant to nucleophilic attack by hydroxyl ions?
1 Methyl acetate
2 Acetonitrile
3 Diethyl ether
4 Acetamide
Explanation:
Acetamide acetonitrile and methyl acetate contains an unsaturated carbon atom which can be easily attacked by nucleophilic such as hydroxide ion These group also contain $\mathrm{C}=\mathrm{O}$ group in which oxygen is electronegatives therefore due to deficiency of carbon electron carbon electron deficient on which nucleophile can attack. Diethyl does not show nucleophilic attack due to absence of multiple bond. Other compound have multiple bonded carbon atom and bears partial positive charge Therefore they undergo nucleophilic attack by $\mathrm{OH}^{-}$ions.
AIIMS-2010
GENERAL ORGANIC CHEMISTRY
231658
Among the following the most stable free radical is
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHCH}_{3}$ is most stable free radical due to resonance and $+\mathrm{I}$-effect.
SRMJEEE - 2012
GENERAL ORGANIC CHEMISTRY
231664
Wilkinson's catalyst is used for
1 Epoxidation
2 Hydrogenation
3 Polymerization
4 Substitution
Explanation:
Wilkinson Catalyst- It is prepared by heating rhodium chloride with triphenyl phosphine in boiling ethanol Its chemical compound is known as triphenyl phosphine chloro rhodium. It is used for hydrogenation of alkene Example
AMU-2013
GENERAL ORGANIC CHEMISTRY
231736
Which of the following is produced during nucleophilic reaction ?
1 Atoms
2 Anion
3 Free radical
4 Cation
Explanation:
(B):Anions are formed during nucleophilic reactions as
NEET Test Series from KOTA - 10 Papers In MS WORD
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GENERAL ORGANIC CHEMISTRY
231656
**Assertion:** Alkyl carbanions like ammonia have pyramidal shape. **Reason:** The carbon atom carrying negative charge has an octet of electrons.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If the Assertion is incorrect but the Reason is correct.
Explanation:
The structure of ammonia is pyramidal shape with $\mathrm{sp}^{3}$ hybridisation. The option (b) is correct due to correct explanation of greater lone pair bond pair repulsion, carbanions assume pyramidal shape.
AIIMS- 2015
GENERAL ORGANIC CHEMISTRY
231657
Which one of the following compounds is resistant to nucleophilic attack by hydroxyl ions?
1 Methyl acetate
2 Acetonitrile
3 Diethyl ether
4 Acetamide
Explanation:
Acetamide acetonitrile and methyl acetate contains an unsaturated carbon atom which can be easily attacked by nucleophilic such as hydroxide ion These group also contain $\mathrm{C}=\mathrm{O}$ group in which oxygen is electronegatives therefore due to deficiency of carbon electron carbon electron deficient on which nucleophile can attack. Diethyl does not show nucleophilic attack due to absence of multiple bond. Other compound have multiple bonded carbon atom and bears partial positive charge Therefore they undergo nucleophilic attack by $\mathrm{OH}^{-}$ions.
AIIMS-2010
GENERAL ORGANIC CHEMISTRY
231658
Among the following the most stable free radical is
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHCH}_{3}$ is most stable free radical due to resonance and $+\mathrm{I}$-effect.
SRMJEEE - 2012
GENERAL ORGANIC CHEMISTRY
231664
Wilkinson's catalyst is used for
1 Epoxidation
2 Hydrogenation
3 Polymerization
4 Substitution
Explanation:
Wilkinson Catalyst- It is prepared by heating rhodium chloride with triphenyl phosphine in boiling ethanol Its chemical compound is known as triphenyl phosphine chloro rhodium. It is used for hydrogenation of alkene Example
AMU-2013
GENERAL ORGANIC CHEMISTRY
231736
Which of the following is produced during nucleophilic reaction ?
1 Atoms
2 Anion
3 Free radical
4 Cation
Explanation:
(B):Anions are formed during nucleophilic reactions as
231656
**Assertion:** Alkyl carbanions like ammonia have pyramidal shape. **Reason:** The carbon atom carrying negative charge has an octet of electrons.
1 If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
2 If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
3 If the Assertion is correct but Reason is incorrect.
4 If the Assertion is incorrect but the Reason is correct.
Explanation:
The structure of ammonia is pyramidal shape with $\mathrm{sp}^{3}$ hybridisation. The option (b) is correct due to correct explanation of greater lone pair bond pair repulsion, carbanions assume pyramidal shape.
AIIMS- 2015
GENERAL ORGANIC CHEMISTRY
231657
Which one of the following compounds is resistant to nucleophilic attack by hydroxyl ions?
1 Methyl acetate
2 Acetonitrile
3 Diethyl ether
4 Acetamide
Explanation:
Acetamide acetonitrile and methyl acetate contains an unsaturated carbon atom which can be easily attacked by nucleophilic such as hydroxide ion These group also contain $\mathrm{C}=\mathrm{O}$ group in which oxygen is electronegatives therefore due to deficiency of carbon electron carbon electron deficient on which nucleophile can attack. Diethyl does not show nucleophilic attack due to absence of multiple bond. Other compound have multiple bonded carbon atom and bears partial positive charge Therefore they undergo nucleophilic attack by $\mathrm{OH}^{-}$ions.
AIIMS-2010
GENERAL ORGANIC CHEMISTRY
231658
Among the following the most stable free radical is
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHCH}_{3}$ is most stable free radical due to resonance and $+\mathrm{I}$-effect.
SRMJEEE - 2012
GENERAL ORGANIC CHEMISTRY
231664
Wilkinson's catalyst is used for
1 Epoxidation
2 Hydrogenation
3 Polymerization
4 Substitution
Explanation:
Wilkinson Catalyst- It is prepared by heating rhodium chloride with triphenyl phosphine in boiling ethanol Its chemical compound is known as triphenyl phosphine chloro rhodium. It is used for hydrogenation of alkene Example
AMU-2013
GENERAL ORGANIC CHEMISTRY
231736
Which of the following is produced during nucleophilic reaction ?
1 Atoms
2 Anion
3 Free radical
4 Cation
Explanation:
(B):Anions are formed during nucleophilic reactions as
