Oxidation of ammonia into nitric oxide in presence of ____________in Ostwald's process.

_____________theory explains why the catalyst remains unchanged in mass and chemical composition at the end of the reaction and is very effective even in small quantities.

___________need stabilising agents for their preservation.

The potential difference between the fixed layer and diffused layer of opposite charges is called ______________potential.

Cloud is an example of

Chemisorption is ______________in nature.

The material on the surface of which the adsorption takes place is known as

Insecticide sprays are example of

The greater the valence of the flocculating ion added,the greater is the power to cause precipitation.This is known as