Preparation, Structure and Stability of Reaction Intermediates
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317414 Assertion :
Benzyne contains a carbon-carbon triple bond.
Reason :
Two of its carbon atoms are sp hybridized.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317415 Assertion :
Carbanion has an octet of electrons.
Reason :
In carbanion, negatively charged carbon atom is \(\mathrm{sp}^{3}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317416 The correct order of decreasing stability of the carbanions is
\(\begin{array}{*{20}{c}}{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus ,}&{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{2}}}\mathop {\rm{C}}\limits^ \ominus {\rm{H,}}}&{{\rm{C}}{{\rm{H}}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}{\rm{,}}}&{{{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{5}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}}\\{{\rm{(A)}}}&{{\rm{(B)}}}&{{\rm{(C)}}}&{{\rm{(D)}}}\end{array}\)

1 A \(>\) B \(>\) C \(>\) D
2 D \(>\) C \(>\) B \(>\) A
3 D \( < \) A \(>\) B \(>\) C
4 A \(>\) B \(>\) D \(>\) C
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317417 Arrange the following in decreasing order of stability.
supporting img

1 I \(>\) II \(>\) III
2 I \(>\) III \(>\) II
3 II \(>\) I \(>\) III
4 II \(>\) III \(>\) I
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317418 Assertion :
Benzyl carbanion is more stable than propyl carbanion.
Reason :
The carbon atom in carbanion is trivalent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317414 Assertion :
Benzyne contains a carbon-carbon triple bond.
Reason :
Two of its carbon atoms are sp hybridized.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317415 Assertion :
Carbanion has an octet of electrons.
Reason :
In carbanion, negatively charged carbon atom is \(\mathrm{sp}^{3}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317416 The correct order of decreasing stability of the carbanions is
\(\begin{array}{*{20}{c}}{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus ,}&{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{2}}}\mathop {\rm{C}}\limits^ \ominus {\rm{H,}}}&{{\rm{C}}{{\rm{H}}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}{\rm{,}}}&{{{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{5}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}}\\{{\rm{(A)}}}&{{\rm{(B)}}}&{{\rm{(C)}}}&{{\rm{(D)}}}\end{array}\)

1 A \(>\) B \(>\) C \(>\) D
2 D \(>\) C \(>\) B \(>\) A
3 D \( < \) A \(>\) B \(>\) C
4 A \(>\) B \(>\) D \(>\) C
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317417 Arrange the following in decreasing order of stability.
supporting img

1 I \(>\) II \(>\) III
2 I \(>\) III \(>\) II
3 II \(>\) I \(>\) III
4 II \(>\) III \(>\) I
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317418 Assertion :
Benzyl carbanion is more stable than propyl carbanion.
Reason :
The carbon atom in carbanion is trivalent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317414 Assertion :
Benzyne contains a carbon-carbon triple bond.
Reason :
Two of its carbon atoms are sp hybridized.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317415 Assertion :
Carbanion has an octet of electrons.
Reason :
In carbanion, negatively charged carbon atom is \(\mathrm{sp}^{3}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317416 The correct order of decreasing stability of the carbanions is
\(\begin{array}{*{20}{c}}{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus ,}&{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{2}}}\mathop {\rm{C}}\limits^ \ominus {\rm{H,}}}&{{\rm{C}}{{\rm{H}}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}{\rm{,}}}&{{{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{5}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}}\\{{\rm{(A)}}}&{{\rm{(B)}}}&{{\rm{(C)}}}&{{\rm{(D)}}}\end{array}\)

1 A \(>\) B \(>\) C \(>\) D
2 D \(>\) C \(>\) B \(>\) A
3 D \( < \) A \(>\) B \(>\) C
4 A \(>\) B \(>\) D \(>\) C
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317417 Arrange the following in decreasing order of stability.
supporting img

1 I \(>\) II \(>\) III
2 I \(>\) III \(>\) II
3 II \(>\) I \(>\) III
4 II \(>\) III \(>\) I
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317418 Assertion :
Benzyl carbanion is more stable than propyl carbanion.
Reason :
The carbon atom in carbanion is trivalent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317414 Assertion :
Benzyne contains a carbon-carbon triple bond.
Reason :
Two of its carbon atoms are sp hybridized.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317415 Assertion :
Carbanion has an octet of electrons.
Reason :
In carbanion, negatively charged carbon atom is \(\mathrm{sp}^{3}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317416 The correct order of decreasing stability of the carbanions is
\(\begin{array}{*{20}{c}}{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus ,}&{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{2}}}\mathop {\rm{C}}\limits^ \ominus {\rm{H,}}}&{{\rm{C}}{{\rm{H}}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}{\rm{,}}}&{{{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{5}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}}\\{{\rm{(A)}}}&{{\rm{(B)}}}&{{\rm{(C)}}}&{{\rm{(D)}}}\end{array}\)

1 A \(>\) B \(>\) C \(>\) D
2 D \(>\) C \(>\) B \(>\) A
3 D \( < \) A \(>\) B \(>\) C
4 A \(>\) B \(>\) D \(>\) C
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317417 Arrange the following in decreasing order of stability.
supporting img

1 I \(>\) II \(>\) III
2 I \(>\) III \(>\) II
3 II \(>\) I \(>\) III
4 II \(>\) III \(>\) I
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317418 Assertion :
Benzyl carbanion is more stable than propyl carbanion.
Reason :
The carbon atom in carbanion is trivalent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317414 Assertion :
Benzyne contains a carbon-carbon triple bond.
Reason :
Two of its carbon atoms are sp hybridized.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317415 Assertion :
Carbanion has an octet of electrons.
Reason :
In carbanion, negatively charged carbon atom is \(\mathrm{sp}^{3}\) hybridised.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317416 The correct order of decreasing stability of the carbanions is
\(\begin{array}{*{20}{c}}{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus ,}&{{{\left( {{\rm{C}}{{\rm{H}}_{\rm{3}}}} \right)}_{\rm{2}}}\mathop {\rm{C}}\limits^ \ominus {\rm{H,}}}&{{\rm{C}}{{\rm{H}}_{\rm{3}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}{\rm{,}}}&{{{\rm{C}}_{\rm{6}}}{{\rm{H}}_{\rm{5}}}\mathop {\rm{C}}\limits^ \ominus {{\rm{H}}_{\rm{2}}}}\\{{\rm{(A)}}}&{{\rm{(B)}}}&{{\rm{(C)}}}&{{\rm{(D)}}}\end{array}\)

1 A \(>\) B \(>\) C \(>\) D
2 D \(>\) C \(>\) B \(>\) A
3 D \( < \) A \(>\) B \(>\) C
4 A \(>\) B \(>\) D \(>\) C
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317417 Arrange the following in decreasing order of stability.
supporting img

1 I \(>\) II \(>\) III
2 I \(>\) III \(>\) II
3 II \(>\) I \(>\) III
4 II \(>\) III \(>\) I
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317418 Assertion :
Benzyl carbanion is more stable than propyl carbanion.
Reason :
The carbon atom in carbanion is trivalent.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.