1
MCQ (Single Correct Answer)

AIPMT 2009

Which of the following compounds will exhibit cis-trans (geometrical) isomerism?
A
Butanol
B
2-Butyne
C
2-Butenol
D
2-Butene

Explanation

Alkenes with double bonds cannot undergo free rotation and can have different geometrical shapes with two different groups on each end of the double bond.
2
MCQ (Single Correct Answer)

AIPMT 2009

Benzene reacts with CH3Cl in the presence of anhydrons AlCl3 to form
A
chlorobenzene
B
benzyl chloride
C
xylene
D
toluene.

Explanation

3
MCQ (Single Correct Answer)

AIPMT 2008

In the hydrocarbon,

The state of hybridization of carbons 1, 3 and 5 are in the following sequence
A
sp, sp2, sp3
B
sp3, sp2, sp
C
sp2, sp, sp3
D
sp, sp3, sp2

Explanation



The state of hybridization of carbons 1, 3 and 5 are sp, sp3 and sp2 respectively.
4
MCQ (Single Correct Answer)

AIPMT 2008


A (predominantly) is
A
B
C
D

Explanation


We know that in case of an unsymmetrical alkene there is the possibility of forming two products. In such cases the formation of major product is decided on the basis of Markownikoffs rule which is rationalized in terms of stability of the carbocation. Also 3o carbocation is more stable than 2o carbocation and 2o carbocation is more stable than 1o carbocation.

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