The triple point is a unique specific temperature and pressure for a substance, distinct from the melting point (solid-liquid equilibrium) or boiling point (liquid-vapour equilibrium) which vary with pressure.
At triple point the substance co-exists in 1. Liquid phase 2. Solid phase 3. Vapour phase Select the correct answer using the code given below :
Asked in UPSC CAPF 2020 · Topic: Heat and Thermodynamics (Phase Transitions and Clausius-Clapeyron Equation)
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