1
MCQ (Single Correct Answer)

AIPMT 2015

2,3-Dimethyl-2-butene can be prepared by heating which of the following compounds with a strong acid?
A
(CH3)3CCH $$=$$ CH2
B
(CH3)2C $$=$$ CHCH2CH3
C
(CH3)2CHCH2CH $$=$$ CH2
D

Explanation

2
MCQ (Single Correct Answer)

AIPMT 2014

Which of the following organic compounds has same hybridization as its combustion product (CO2)?
A
Ethane
B
Ethyne
C
Ethene
D
Ethanol

Explanation

The combustion reaction of ethylene is

C2O2 + $${5 \over 2}$$O2 $$ \to $$ 2CO2 + H2O

Both ethyne and CO2 have sp-hybridisation.
3
MCQ (Single Correct Answer)

AIPMT 2014

Identify Z in the sequence of reactions :
A
CH3 $$-$$(CH2)3 $$-$$ O $$-$$ CH2CH3
B
(CH3)2CH $$-$$ O $$-$$ CH2CH3
C
CH3(CH2)4 $$-$$ O $$-$$ CH3
D
CH3CH2 $$-$$ CH(CH3) $$-$$ O $$-$$ CH2CH3

Explanation

4
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.

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