Which of the following is not an antiseptic drug?

An antiseptic,Dettol,is a mixture of two compounds '$A$' and '$B$',where $A$ has $6$ $\pi$ electrons and $B$ has $2$ $\pi$ electrons. What is '$B$'?

Food preservatives prevent spoilage of food due to microbial growth. The most commonly used preservatives are

Which type of drugs are useful for anxiety and stress?

Which of the following pairs is not correctly matched?

Identify the term used for drugs that reduce or relieve pain without causing loss of consciousness.