Write the composition of aqua-regia. 

The composition of aqua-regia is

State the composition of aqua regia . State which component is the oxidising agent in aqua regia.

Write the composition of Sodium amalgam

Write down the composition of air in per cent by volume.

State the composition of sweat.

Write the composition of a composite rocket propellant

What are the main components of air ? Write down the composition of three main gases present in air by volume.

State: The composition of Biogas.

Write the chemical composition of rust.

Describe the composition of anode and cathode in a mercury cell. Write the electrode reaction for this cell.