Heating of carbonate ores in the absence of air to convert them into oxides is known as:

$A$ non-metal $A$ is an important constituent of our food and forms two oxides $B$ and $C$. Oxide $B$ is toxic,whereas $C$ causes global warming.
$(a)$ Identify $A$,$B$,and $C$.
$(b)$ To which Group of the Periodic Table does $A$ belong?

Which medicine is prepared using ammonia?

An electrolytic cell consists of:
$(i)$ Positively charged cathode
$(ii)$ Negatively charged anode
$(iii)$ Positively charged anode
$(iv)$ Negatively charged cathode

With which of the following does the element carbon not give reaction?

Which of the following is not a neutral oxide?