1

### 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

### 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

### 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

### 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.