1.

Physical adsorption of a gaseous species may change to chemical adsorption with…………

Answer»

DECREASE in temperature
increase in temperature
increase in surface area of ADSORBENT
decrease in surface area of adsorbent .

Solution :At high temperature, gaseous species MAY DISSOCIATE into atoms which are chemisorbed, e.g., `N_(2)` on iron surface at `ge 773K.`


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