The gas which can be easily liquefied by applying pressure

Which is manufactured by contact process?

Which is known as 'Royal Water'?

A factor which does not affect the equilibrium system is

Which is the most abundant element in the atmosphere?

Reaction of sulphuric acid with water is  ___________ process.

Compound used for sulphate test is

What colour of a ring you observe in a nitrate test?

The product of Haber process is

Which is known as king of chemicals?