1
MCQ (Single Correct Answer)

AIPMT 2014

What products are formed when the following compound is treated with Br2 in the presence of FeBr3?

A
B
C
D

Explanation

Methyl group is ortho para directing but due to steric hindrance effect, generated by two -CH3 groups substitution will not take place on position (I). Hence only two products are possible.
2
MCQ (Single Correct Answer)

NEET 2013 (Karnataka)

In the following reaction :

Product 'P' will not give
A
Tollen's reagent test
B
Brady's reagent test
C
Victor Meyer test
D
Iodoform test

Explanation


CH3CHO does not give Victor Meyer test.
3
MCQ (Single Correct Answer)

NEET 2013 (Karnataka)

Which of the following chemical system is non aromatic ?
A
B
C
D

Explanation

The molecules which do not satisfy Huckel rule or (4n + 2)$$\pi $$-electron rule are said to be non-aromatic.

The compound (d) has four $$\pi $$ electrons. It does not follow (4n + 2)$$\pi $$ rule. So it is non-aromatic compound.
4
MCQ (Single Correct Answer)

NEET 2013

Which of the following compounds will not undergo Friedal-Craft's reaction easily?
A
Nitrobenzene
B
Toluene
C
Cumene
D
Xylene

Explanation

Nitrobenzene is strongly deactivated, hence will not undergo Friedel-Crafts reaction.

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