Why are powdered substances more effective adsorbents than their crystalline forms?

Wood charcoal is used to decolourise sugar because it

The Freundlich adsorption isotherm is given by:

Which among the following gases is least adsorbed on a solid at similar conditions of temperature and pressure?

Choose the correct statement for chemical adsorption.

When a graph is plotted between $\log (x/m)$ and $\log P$,it is a straight line with an angle of $45^o$ and an intercept of $0.3010$ on the $y-$axis. If the initial pressure is $0.3 \ atm$,what will be the amount of gas adsorbed per $g$ of adsorbent $(x/m)$?