90970
The major product $(\mathrm{Y})$ formed in the following reaction sequence
1
2
3
4
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90971
The major product $P$ from the following reaction is
1
2
3
4
Explanation:
Shift-II]**
HALOALKANES AND HALOARENES
90973
Assertion: Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene. Reason: Alkyl halides are less reactive than acyl halides.
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 Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Because of $+\mathrm{I}$ effect of the alkyl group electron density increases in alkyl benzene relative to benzene and therefore, further substitution occurs to form a poly alkyl substituted benzene.
2013
HALOALKANES AND HALOARENES
90974
What is the correct sequence of reagents used for converting nitrobenzene into mdibromobenzene?
90970
The major product $(\mathrm{Y})$ formed in the following reaction sequence
1
2
3
4
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90971
The major product $P$ from the following reaction is
1
2
3
4
Explanation:
Shift-II]**
HALOALKANES AND HALOARENES
90973
Assertion: Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene. Reason: Alkyl halides are less reactive than acyl halides.
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 Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Because of $+\mathrm{I}$ effect of the alkyl group electron density increases in alkyl benzene relative to benzene and therefore, further substitution occurs to form a poly alkyl substituted benzene.
2013
HALOALKANES AND HALOARENES
90974
What is the correct sequence of reagents used for converting nitrobenzene into mdibromobenzene?
90970
The major product $(\mathrm{Y})$ formed in the following reaction sequence
1
2
3
4
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90971
The major product $P$ from the following reaction is
1
2
3
4
Explanation:
Shift-II]**
HALOALKANES AND HALOARENES
90973
Assertion: Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene. Reason: Alkyl halides are less reactive than acyl halides.
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 Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Because of $+\mathrm{I}$ effect of the alkyl group electron density increases in alkyl benzene relative to benzene and therefore, further substitution occurs to form a poly alkyl substituted benzene.
2013
HALOALKANES AND HALOARENES
90974
What is the correct sequence of reagents used for converting nitrobenzene into mdibromobenzene?
90970
The major product $(\mathrm{Y})$ formed in the following reaction sequence
1
2
3
4
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90971
The major product $P$ from the following reaction is
1
2
3
4
Explanation:
Shift-II]**
HALOALKANES AND HALOARENES
90973
Assertion: Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene. Reason: Alkyl halides are less reactive than acyl halides.
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 Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Because of $+\mathrm{I}$ effect of the alkyl group electron density increases in alkyl benzene relative to benzene and therefore, further substitution occurs to form a poly alkyl substituted benzene.
2013
HALOALKANES AND HALOARENES
90974
What is the correct sequence of reagents used for converting nitrobenzene into mdibromobenzene?
90970
The major product $(\mathrm{Y})$ formed in the following reaction sequence
1
2
3
4
Explanation:
Shift-I]**
HALOALKANES AND HALOARENES
90971
The major product $P$ from the following reaction is
1
2
3
4
Explanation:
Shift-II]**
HALOALKANES AND HALOARENES
90973
Assertion: Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene. Reason: Alkyl halides are less reactive than acyl halides.
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 Assertion.
3 If Assertion is correct but Reason is incorrect.
4 If both the Assertion and Reason are incorrect.
Explanation:
Because of $+\mathrm{I}$ effect of the alkyl group electron density increases in alkyl benzene relative to benzene and therefore, further substitution occurs to form a poly alkyl substituted benzene.
2013
HALOALKANES AND HALOARENES
90974
What is the correct sequence of reagents used for converting nitrobenzene into mdibromobenzene?
