Which one of the following is employed as a tranquilizer?

Match List-$I$ with List-$II$ and choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| :--- | :--- |
| $A$. Morphine | $I$. Anti-depressant |
| $B$. Chloroxylenol | $II$. $550$ times sweeter than cane sugar |
| $C$. Phenelzine | $III$. Narcotic analgesic |
| $D$. Saccharin | $IV$. Antiseptic |

Given below are two statements:
Statement $I$: Penicillin is a bacteriostatic type of antibiotic.
Statement $II$: The general structure of Penicillin is as shown below:
$R-CONH-CH-CH-S-C(CH_3)_2-CH-COOH$ (with a $\beta$-lactam ring fused to a thiazolidine ring).
Choose the correct option:

Which of the following is/are barbiturates?

The drug used as an antidepressant is:

$2-$Acetoxybenzoic acid is used as an: