324330
Assertion : Reduction of m-dinitrobenzene with ammonium sulphide gives m-nitroaniline. Reason : m-Nitroaniline formed gets precipitatcd and hence, further reduction is prevented .
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.
Explanation:
m-Nitroaniline's lower electron deficiency, influenced by opposing \({\text{ + R}}\) and \({\text{ - R}}\) effects, hinders its further reduction compared to \(\mathrm{m-}\) dinitrobenzene. Therefore the option (3) is correct.
CHXII13:AMINES
324331
Assertion : \(\mathrm{p}-\mathrm{O}_{2} \mathrm{~N}-\mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COCH}_{3}\) is prepared by Friedel - Craft's acylation of nitrobenzene. Reason : Nitrobenzene easily undergoes electrophilic substituion reactions.
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 Both Assertion and Reason are incorrect.
Explanation:
\(-\mathrm{NO}_{2}\) group is a strong electron withdrawing group, hence deactivates the benzene ring by decreasing the electron density from it. Hence, nitrobenzene does not undergo Friedel - Craft's acylation and electrophilic substitution reactions.
AIIMS - 2005
CHXII13:AMINES
324332
Assertion : Tautomerism is exhibited by a compound which is a mixture of two labile forms in dynamic equilibrium. Reason : Nitroalkanes do not show tautomerism.
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.
Explanation:
Nitroalkanes containing \(\alpha\)-hydrogens i.e., \(1^{\circ}\) and \(2^{\circ}\) (but not \(3^{\circ}\) nitroalkanes), show tautomerism. Nitroalkanes with \(\alpha\)-hydrogens, especially primary \(\left(1^{\circ}\right)\) and secondary \(\left(2^{\circ}\right)\) nitroalkanes, exhibit tautomeric behavior by rapidly interconverting through proton shifts. So the option (3) is correct.
On hydrogenation of methyl nitrate in the presence of \({\rm{SnC}}{{\rm{l}}_{\rm{2}}}\) and \({\rm{HCl}}\), methyl amine is formed. \({\text{C}}{{\text{H}}_{\text{3}}}{\text{N}}{{\text{O}}_{\text{2}}}\xrightarrow[{{\text{HCl}}}]{{{\text{SnC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{N}}{{\text{H}}_{\text{2}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}}\)
324330
Assertion : Reduction of m-dinitrobenzene with ammonium sulphide gives m-nitroaniline. Reason : m-Nitroaniline formed gets precipitatcd and hence, further reduction is prevented .
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.
Explanation:
m-Nitroaniline's lower electron deficiency, influenced by opposing \({\text{ + R}}\) and \({\text{ - R}}\) effects, hinders its further reduction compared to \(\mathrm{m-}\) dinitrobenzene. Therefore the option (3) is correct.
CHXII13:AMINES
324331
Assertion : \(\mathrm{p}-\mathrm{O}_{2} \mathrm{~N}-\mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COCH}_{3}\) is prepared by Friedel - Craft's acylation of nitrobenzene. Reason : Nitrobenzene easily undergoes electrophilic substituion reactions.
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 Both Assertion and Reason are incorrect.
Explanation:
\(-\mathrm{NO}_{2}\) group is a strong electron withdrawing group, hence deactivates the benzene ring by decreasing the electron density from it. Hence, nitrobenzene does not undergo Friedel - Craft's acylation and electrophilic substitution reactions.
AIIMS - 2005
CHXII13:AMINES
324332
Assertion : Tautomerism is exhibited by a compound which is a mixture of two labile forms in dynamic equilibrium. Reason : Nitroalkanes do not show tautomerism.
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.
Explanation:
Nitroalkanes containing \(\alpha\)-hydrogens i.e., \(1^{\circ}\) and \(2^{\circ}\) (but not \(3^{\circ}\) nitroalkanes), show tautomerism. Nitroalkanes with \(\alpha\)-hydrogens, especially primary \(\left(1^{\circ}\right)\) and secondary \(\left(2^{\circ}\right)\) nitroalkanes, exhibit tautomeric behavior by rapidly interconverting through proton shifts. So the option (3) is correct.
On hydrogenation of methyl nitrate in the presence of \({\rm{SnC}}{{\rm{l}}_{\rm{2}}}\) and \({\rm{HCl}}\), methyl amine is formed. \({\text{C}}{{\text{H}}_{\text{3}}}{\text{N}}{{\text{O}}_{\text{2}}}\xrightarrow[{{\text{HCl}}}]{{{\text{SnC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{N}}{{\text{H}}_{\text{2}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}}\)
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII13:AMINES
324330
Assertion : Reduction of m-dinitrobenzene with ammonium sulphide gives m-nitroaniline. Reason : m-Nitroaniline formed gets precipitatcd and hence, further reduction is prevented .
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.
Explanation:
m-Nitroaniline's lower electron deficiency, influenced by opposing \({\text{ + R}}\) and \({\text{ - R}}\) effects, hinders its further reduction compared to \(\mathrm{m-}\) dinitrobenzene. Therefore the option (3) is correct.
CHXII13:AMINES
324331
Assertion : \(\mathrm{p}-\mathrm{O}_{2} \mathrm{~N}-\mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COCH}_{3}\) is prepared by Friedel - Craft's acylation of nitrobenzene. Reason : Nitrobenzene easily undergoes electrophilic substituion reactions.
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 Both Assertion and Reason are incorrect.
Explanation:
\(-\mathrm{NO}_{2}\) group is a strong electron withdrawing group, hence deactivates the benzene ring by decreasing the electron density from it. Hence, nitrobenzene does not undergo Friedel - Craft's acylation and electrophilic substitution reactions.
AIIMS - 2005
CHXII13:AMINES
324332
Assertion : Tautomerism is exhibited by a compound which is a mixture of two labile forms in dynamic equilibrium. Reason : Nitroalkanes do not show tautomerism.
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.
Explanation:
Nitroalkanes containing \(\alpha\)-hydrogens i.e., \(1^{\circ}\) and \(2^{\circ}\) (but not \(3^{\circ}\) nitroalkanes), show tautomerism. Nitroalkanes with \(\alpha\)-hydrogens, especially primary \(\left(1^{\circ}\right)\) and secondary \(\left(2^{\circ}\right)\) nitroalkanes, exhibit tautomeric behavior by rapidly interconverting through proton shifts. So the option (3) is correct.
On hydrogenation of methyl nitrate in the presence of \({\rm{SnC}}{{\rm{l}}_{\rm{2}}}\) and \({\rm{HCl}}\), methyl amine is formed. \({\text{C}}{{\text{H}}_{\text{3}}}{\text{N}}{{\text{O}}_{\text{2}}}\xrightarrow[{{\text{HCl}}}]{{{\text{SnC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{N}}{{\text{H}}_{\text{2}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}}\)
324330
Assertion : Reduction of m-dinitrobenzene with ammonium sulphide gives m-nitroaniline. Reason : m-Nitroaniline formed gets precipitatcd and hence, further reduction is prevented .
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.
Explanation:
m-Nitroaniline's lower electron deficiency, influenced by opposing \({\text{ + R}}\) and \({\text{ - R}}\) effects, hinders its further reduction compared to \(\mathrm{m-}\) dinitrobenzene. Therefore the option (3) is correct.
CHXII13:AMINES
324331
Assertion : \(\mathrm{p}-\mathrm{O}_{2} \mathrm{~N}-\mathrm{C}_{6} \mathrm{H}_{4} \mathrm{COCH}_{3}\) is prepared by Friedel - Craft's acylation of nitrobenzene. Reason : Nitrobenzene easily undergoes electrophilic substituion reactions.
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 Both Assertion and Reason are incorrect.
Explanation:
\(-\mathrm{NO}_{2}\) group is a strong electron withdrawing group, hence deactivates the benzene ring by decreasing the electron density from it. Hence, nitrobenzene does not undergo Friedel - Craft's acylation and electrophilic substitution reactions.
AIIMS - 2005
CHXII13:AMINES
324332
Assertion : Tautomerism is exhibited by a compound which is a mixture of two labile forms in dynamic equilibrium. Reason : Nitroalkanes do not show tautomerism.
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.
Explanation:
Nitroalkanes containing \(\alpha\)-hydrogens i.e., \(1^{\circ}\) and \(2^{\circ}\) (but not \(3^{\circ}\) nitroalkanes), show tautomerism. Nitroalkanes with \(\alpha\)-hydrogens, especially primary \(\left(1^{\circ}\right)\) and secondary \(\left(2^{\circ}\right)\) nitroalkanes, exhibit tautomeric behavior by rapidly interconverting through proton shifts. So the option (3) is correct.
On hydrogenation of methyl nitrate in the presence of \({\rm{SnC}}{{\rm{l}}_{\rm{2}}}\) and \({\rm{HCl}}\), methyl amine is formed. \({\text{C}}{{\text{H}}_{\text{3}}}{\text{N}}{{\text{O}}_{\text{2}}}\xrightarrow[{{\text{HCl}}}]{{{\text{SnC}}{{\text{l}}_{\text{2}}}}}{\text{C}}{{\text{H}}_{\text{3}}}{\text{N}}{{\text{H}}_{\text{2}}}{\text{ + 2}}{{\text{H}}_{\text{2}}}{\text{O}}\)
