_________have no interfaces.

Both adsorption and absorption can take place simultaneously,the term_________is used to describe both the processes.

According to the adsorption theory of catalysis, the speed of the reaction increases because

_____________is used as a catalyst in the Ostwald's process for the manufacture of nitric acid.

When the gas molecules or atoms are held to the solid surface by chemical bonds,the adsorption is termed as______________

The method usually employed for the precipitation of a colloidal solution is  

The variation in the amount of gas adsorbed by the  adsorbent with pressure at constant temperature can be expressed by means of a curve known as ____________.

If accumulation of gas on the surface of a solid occurs on account of weak van der Waal's forces,the adsorption is termed as ___________

____________is an enzyme present in curd.

__________are known as biochemical catalysts.