Which compound is used as a food preservative?

$A$ drug that is antipyretic as well as analgesic is

Which of the following compounds are not used as disinfectants?
$A$. Chloroxylenol $B$. Bithional $C$. Veronal $D$. Prontosil $E$. Terpineol
Choose the correct answer from the options given below:

What does a biodegradable detergent structurally contain?

Which of the following is not a chlorinated insecticide?

Match the following:

List-$I$ (Chemical)	List-$II$ (Type)
$A$. Bithionol	$I$. Artificial sweetener
$B$. Saccharin	$II$. Antifertility drug
$C$. Sodium benzoate	$III$. Antiseptic
$D$. Norethindrone	$IV$. Food preservative

The correct answer is