Q8 of 97 Page 133

Arrange the following compounds in increasing order of their boiling points.

(a)



(b) CH3CH2CH2CH2Br


(c)



The boiling points of isomeric alkyl halides are proportional to their branching, with a decrease in B.P. with increase in branching. Hence, boiling point of the tertiary isomer is the lowest, and that of primary isomer is the highest. The order of reducing boiling points is thus (b) > (a) > (c). The correct option is (iii).

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6

Which reagent will you use for the following reaction?

CH3CH2CH2CH3→ CH3CH2CH2CH2Cl + CH3CH2CHClCH3


 7

Arrange the following compounds in the increasing order of their densities.

(a)



(b)



(c)



(d)



 9

In which of the following molecules carbon atom marked with asterisk (*) is asymmetric?

(a)



(b)



(c)



(d)



 10

Which of the following structures is enantiomeric with the molecule (A) given below :


A.



B.



C.



D.