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1

NEET 2016 Phase 2

MCQ (Single Correct Answer)
A given nitrogen-containing aromatic compound 'A' reacts with Sn/HCl, followed by HNO2 to give instable compound 'B'. 'B', on treatment with phenol, forms a beautiful coloured compound 'C' with the molecular formula C12H10N2O. The structure of compound 'A' is
A
B
C
D

Explanation

2

NEET 2016 Phase 1

MCQ (Single Correct Answer)
The correct statement regarding the basicity of arylamines is
A
arylamines are generally more basic than alkalmines because of aryl group
B
arylamines are generally more basic than alkylmines, because the nitrogen atom in arylamines is sp-hybridised
C
arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalised by interaction with the aromatic ring $$\pi $$-electron system
D
arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalised by interaction with the aromatic ring $$\pi $$-electron system.

Explanation

In arylamines, lone pair of electrons on nitrogen atom is delocalized over the benzene ring, thus not available for donation so arylamine are less basic than alkylamines.
3

NEET 2016 Phase 2

MCQ (Single Correct Answer)
Which one of the following nitro-compounds does not react with nitrous acid?
A
B
C
D

Explanation

Tertiary nitroalkanes do not react with nitrous acid as they do not contain $$\alpha $$-hydrogen atom.
4

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)
The electrolytic reduction of nitrobenzene in strongly acidic medium produces
A
azobenzene
B
aniline
C
$$p$$-aminophenol
D
azoxybenzene.

Explanation

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