Iproniazid and phenelzine are:

Which of the following is not a detergent?

Which of the following substances are used in the preparation of antacid medicines?

An artificial sweetener $X$ is a halogen-containing compound and artificial sweetener $Y$ is a sulphur-containing compound. $X$ and $Y$ respectively are:

Which of the following is used as disinfectant as well as antiseptic?

Which one is used as a food preservative?