At ____________ point, all the three phases (i.e. solid, liquid and gas) co-exist ?
Correct answer: B. Triple
- A. Eutectic
- B. Triple
- C. Plait
- D. Critical
Explanation
The triple point is the unique temperature and pressure at which solid, liquid, and vapour phases coexist in equilibrium. A critical point concerns the termination of the liquid-vapour boundary, not three-phase coexistence.
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