Question

The practice of breaking of rocks during rainy season by inserting wooden pegs in them is based on the phenomenon of ______________.

• A. Imbibition pressure
• B. Turgor pressure
• C. Osmotic pressure
• D. Wall pressure

Answer 1

The correct option is A Imbibition pressure

Imbibition pressure generated during germination of seeds and spores is so enormous that it can break asphalt roads and concrete pavements. In older times, the imbibition pressure was used in breaking the rocks and stones. Dry wooden stakes, if driven into a small crack in a rock and then soaked, can develop enough pressure to split the rock.