Question

The nature of bonding forces in adsorption is:

• A. purely physical such as van der Waals forces
• B. purely chemical
• C. both chemical and physical are possible
• D. none of these

Answer 1

Answer: (C)

both chemical and physical are possible

The exact nature of the bonding depends on the details of the species involved, but the adsorption process is generally classified as physisorption (characteristic of weak van der Waals forces) or chemisorption (characteristic of covalent bonding). It may also occur due to electrostatic attraction.

Hence, the correct option is $\text{C}$