SECTION 1.4 DIFFICULTY LEVEL

25. Which of these molecules are polar?

HINT: look for the presence of at least one polar covalent bond in these molecules!

O

CH

2

CH

2

C

H

H

CH

2

Cl

2

CH

3

CH

3

CH

3

OH

I

II

III

IV

V

a) III, IV, V

b) I, IV

c) II, III, V

d) I, III

Answer: c