2. Which of the following assertions about the extent of physisorption is correct? a) Increases with increase in temperature b) Decreases with increase in surface area c) Decreases with increase in the strength of Van der Waals forces d) Decreases with increase in temperature
Solution : Extent of physisorption of a gas increases with decrease in temperature. Because in physisorption particles are held to the surface by weak van der Waals' force of attraction hence on increasing temperature they get desorbed easily.
