Which of the following is a narcotic analgesic?

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 '$B$'?

Which of the following statements are true for saccharin?
$(A)$ It is a sodium salt and is not soluble in water.
$(B)$ It is much sweeter than cane sugar.
$(C)$ It is of great value for diabetic patients and is excreted as such in urine.
$(D)$ It is harmful.

Identify the non-narcotic analgesic drug.

What are the main constituents of Dettol?

Given below are two statements:
Statement $I:$ Noradrenaline is a neurotransmitter.
Statement $II:$ Low level of noradrenaline is not the cause of depression in human.
In the light of the above statements,choose the correct answer from the options given below.