Question

Wooden doors and windows swell up in the rainy season by

• A. A special type of diffusion called imbibition
• B. Evaporation of stored water wood
• C. Conduction of water from walls
• D. Transpiration

Answer 1

The correct option is A A special type of diffusion called imbibition

Answer is option A i.e. "A special type of diffusion called imbibition"
Imbibition is the physical adsorption of water or moisture. A common example is swelling of wooden furniture, doors, windows and frames of doors. The adsorption of water by the solid particles of a substance without forming a solution is called imbibition. Jamming of wooden frames during rains is caused by swelling of wood due to imbibition.