Which of the following is a bacteriostatic antibiotic?

The following type of non-ionic detergent is present in liquid detergents,emulsifying agents,and wetting agents. Label the hydrophilic and hydrophobic parts in the molecule. Identify the functional group$(s)$ present in the molecule.
$C_9H_{19}-C_6H_4-O(CH_2CH_2O)_xCH_2CH_2OH$ $(x = 5 \text{ to } 10)$

Which of the following is not a detergent?

Which of the following is the correct structure of the drug Paracetamol?

Match the following.

Column $I$	Column $II$
$A$. Analgesic	$I$. Phenelzine
$B$. Tranquilizer	$II$. Terfenadine
$C$. Antibiotic	$III$. Codeine
$D$. Antihistamine	$IV$. Prontosil

Cocaine is