Surface Chemistry

Answer (a) an adsorbent

Answer (b) Glycerol

Fog is a liquid aerosol i.e., a liquid (water) dispersed in a gas (air). Other example are must, cloud and insecticide sprays.

In lead chamber process, is oxidised to by the oxides of nitrogen. Hence it is homogeneous catalysis as the catalyst as well as the reactants are in gaseous.state.

A gas having high atomic mass, will have greater intermolecular forces of attraction ahd hence cart be Iiquefied easily, The gas which is more easily Iiquefiable is more readily adsorbed. Adsorption increases with decrease of temperature.

Adsorption is an exothermic process, hence, according to Le Chatelier's principle, it increases with decrease of.temperature

A negative catalyst will increase the activation energy of the reaction.
Catalysts which decreases the rate of reaction is called a negative catalyst.
It decreases the rate of reaction by increasing the activation energy barrier which decreases the number of reactant molecules to transform into products and hence the rate of reaction decreases.

Chemisorption, unlike physisorption, involves the formation of strong chemical bonds between the adsorbate and the adsorbent. This type of adsorption typically occurs at high temperatures and high pressures, as these conditions increase the rate of interaction and bond formation between the molecules. Thus, the correct answer is Option (C).