$Na_2CO_3$ is manufactured by the Solvay process. The products that are recycled are:

Which of the following compounds release oxygen upon heating?

$A$ metal when left exposed to the atmosphere for some time becomes coated with green basic carbonate. The metal in question is

$A$ metal $X$ on heating in nitrogen gas gives $Y$. $Y$ on reaction with ${H_2}O$ produces a colourless gas. When this gas is passed through $CuSO_4$ solution,it gives a blue colour. What is $Y$?

Which element is responsible for the crimson red color in fireworks?

Alkali metals dissolve in liquid ammonia to give a deep blue solution. This blue color is due to which of the following?