9. Which of the following bonds is least polar? (A) C—O (B) H—C (C) Cl—Cl (D) S—Cl (E) They are all nonpolar.

11. Rank the following compounds according to increasing solubility in water.I. CH3–CH2–CH2–CH3 II. CH3–OH III. CH3–CH2–OH IV. CH3–CH2–O–CH2–CH3 (A) I < IV < III < II (B) I < II < IV < III (C) III < IV < II < I (D) I < II < III < IV (E) None of these (A-D) is correct.