9. For same or similar molecular weight of following compounds, which one has the highest boiling point? (A) acids (B) alcohols (C) esters (D) (E) nitriles.

2. Physostigmine is used in the treatment of glaucoma. Within this structure, the atom indicated by is most basic, while atom is least basic. (A) 1 (most basic), 4 (least basic) (B) 1 (most basic), 3 (least basic) (C) 2 (most basic), 4 (least basic) (D) 2 (most basic), 3 (least basic) (E) None of the above.