Chemically inert elements are,

The recently developed materials from carbon with the help of modern technology is

A greenish yellow gas with a pungent smell is

Which is prepared by dissolving carbon dioxide in water under high pressure?

One of the most important and widely distributed element is

Which are generally solids at room temperature?

The coloured organic substances which can be obtained from plants or prepared artificially is

Hydrated copper sulphate (CuSO₄. 5H₂O) is

The most abundant metal found in the earth's crust is