Read the following statements and choose the correct answer (i) The boiling points of isomeric haloalkanes decrease with increase in branching. (ii) Among isomeric dihalobenzenes the para-isomers have higher melting point than their ortho and metaisomers. (iii) The isomeric dihalobenzene have large difference in their boi I ing and melting points (iv) The isomeric dihalobenzene have nearly same boiling point.

Read the following statements and choose the correct answer (i) The b

1.	Read the following statements and choose the correct answer (i) The boiling points of isomeric haloalkanes decrease with increase in branching. (ii) Among isomeric dihalobenzenes the para-isomers have higher melting point than their ortho and metaisomers. (iii) The isomeric dihalobenzene have large difference in their boi I ing and melting points (iv) The isomeric dihalobenzene have nearly same boiling point.
Answer» (i), (ii) and (iii) are correct (i) and (iii) are correct (ii) and (iv) are correct (i) , (ii) and (iv) are correct Solution :The boiling POINTS of isomeric haloalkanes decrease with increase in branching. For example, 2-bromo-2-methylpropane has the lowest boiling point among the THREE isomers Boiling points of isomeric dihalobenzenes are very nearly the same. However, the para-isomers are high melting as compared to their ortho and meta-isomers. It is DUE to symmetry of para-isomers that FITS in CRYSTAL Ia nice better as compared to ortho- and meta-isomers.