Smoke is an example of ...

The correct order of ionisation energy of $C, N, O, F$ is :-

For the reaction $A + 2B \rightleftharpoons 2C + D$,the initial concentration of $A$ is $a$ and the initial concentration of $B$ is $1.5$ times that of $A$. If the concentrations of $A$ and $D$ are equal at equilibrium,what will be the concentration of $B$ at equilibrium?

Which pair of oxides is acidic in nature?

Urea upon hydrolysis yields:

Identify the non-narcotic analgesic from the following.