The process of change of solid state directly into gaseous state is termed as which of the following?
Answer & explanation
Correct answer: option 3
The correct answer is option 3. Sublimation.
The process of change of a solid state directly into a gaseous state is termed Sublimation.
Sublimation describes the transition of a substance from a solid phase directly into a gas phase, bypassing the liquid state altogether. This is commonly observed with materials like dry ice (solid \(CO_2\)) or mothballs (paradichlorobenzene).
Solidification: This refers to the opposite process, where a liquid transforms into a solid state. Deposition: Similar to sublimation, deposition describes the direct change of a gas into a solid state without going through the liquid phase.
Condensation: This is the process where vapor molecules in the air transition back into a liquid state.