Wooden doors swell up and get stuck during rainy season due to

Solution(By Examveda Team)

Wooden doors swell up and get stuck during the rainy season due to Imbibition.
Imbibition is a special type of diffusion that takes place when liquid is absorbed by solids-colloids causing an increase in volume.
Water surface potential movement takes place along a concentration gradient; some dry materials absorb water. A gradient between the absorbent and the liquid is essential for imbibition.
Dry wooden doors imbibe water from the moisture in the atmosphere during the rainy season and swell up.