Chemistry 2nd PUC Question Paper. We covered all the Chemistry 2nd PUC Question Paper MCQs in this post for free so that you can practice well for the exam.
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Chemistry 2nd PUC Objective Question Paper for Students
Hinsberg reagent is used to distinguish between
(A) 1° amine & 2° amine
(B) 2° amine & 3° amine
(C) 1° amine & 3° amine
(D) All above
Option d – All above
By heating which mixture, of propane nitrile will be obtained?
(A) Ethyl alcohol + KCN
(B) Propyl alcohol + KCN
(C) Ethyl chloride + KCN
(D) Propyl chloride + KCN
Option c – Ethyl chloride + KCN
Nitration of aniline in a strongly acidic medium also gives m-nitroaniline because
(A) In spite of substituents, nitro groups always go to only m-position.
(B) In electrophilic substitution reactions, the amino group is meta directive.
(C) In the absence of substituents, nitro groups always go to m-position.
(D) In acidic (strong) medium, aniline is present as anilinium ion.
Option d – In acidic (strong) medium, aniline is present as anilinium ion.
Which of the following reactions is appropriate for converting acetamide to methenamine?
(A) Hoffman hyprobromamide reaction
(B) Sttephens reaction
(C) Gabriels phthalimide synthesis
(D) Carbylamine reaction.
Option a – Hoffman hyprobromamide reaction
The correct statement regarding the basicity of arylamines is
(A) Arylamines are generally more basic than alkyl amines because the nitrogen atom in arylamines is sp-hybridized.
(B) Arylamine is generally less basic than alkyl amine because the nitrogen lone pair electrons are delocalized by interaction with the aromatic ring p-electron system.
(C) Arylamines are generally more basic than alkyl amines because the nitrogen lone-pair electrons are not delocalized by interaction with the aromatic ring p-electron system.
(D) Arylamines are generally more basic than alkyl amines because of the aryl group.
Option b – Arylamine is generally less basic than alkyl amine because the nitrogen lone pair electrons are delocalized by interaction with the aromatic ring p-electron system
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