A test tube filled with previously moistened Bengal gram seeds and water was closed tightly and kept in a corner. The test tube broke suddenly after a few hours. The phenomenon involved is _____.
Options:
A . diffusion
B . osmosis
C . imbibition
D . capillary action
Answer: Option C : C The phenomenon involved here is imbibition. Imbibitionis a special type of diffusion when water is absorbed by solids-colloids causing an enormous increase in volume. Here the Bengal gram seeds swell up imbibing water and the test tube being tightly sealed cause the test tube to break to accommodate the immense increase in volume.
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