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

Chemically inert elements are,

A silvery white , liquid metal is

One of the most important and widely distributed element is

Compounds of carbon ,hydrogen and oxygen are

Which is used for cancer therapy?

Hydrated copper sulphate (CuSO₄. 5H₂O) is

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

A grey powder is

Which produce natural gas and biogas?