GK QUESTION#3545
The table lists the arrows and their labels in four proposed state-change diagrams. Which diagram labels every change correctly? A dash means that direction has no arrow; two names in one cell mean two arrows with those labels.
Swipe table sideways to see every column.
| Diagram | Solid → liquid | Liquid → solid | Liquid → gas | Gas → liquid | Solid → gas | Gas → solid |
|---|---|---|---|---|---|---|
| a | Vaporisation | Solidification | Condensation | Fusion | Sublimation | Deposition |
| b | Fusion | Solidification | Vaporisation | Condensation | Sublimation | Deposition |
| c | Vaporisation | Deposition | Fusion | Condensation | Deposition | Sublimation |
| d | Vaporisation; Condensation | — | — | Fusion; Deposition | — | Sublimation; Deposition |
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Answer
C. b
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Explanation
Diagram b gives all six changes correctly: solid to liquid is fusion, liquid to solid is solidification, liquid to gas is vaporisation, gas to liquid is condensation, solid to gas is sublimation, and gas to solid is deposition. These are physical changes of state, not changes in chemical composition.