Among the following,which are narcotic analgesics?

$4$-hydroxyacetanilide is commonly known as which of the following?

The statement/s which are true about antagonists from the following is/are :-
$A.$ They bind to the receptor site.
$B.$ Get transferred inside the cell for their action.
$C.$ Inhibit the natural communication of the body.
$D.$ Mimic the natural messenger.
Choose the correct answer from the options given below :-

Identify the correct pair from the following.

What is the difference between bathing soap and washing soaps?

Among the following,which is an antacid?