Which of following statements is/are true?

Question

BlackTom AI · Accepted Answer

The question asks which of the following statements are true, and the provided answer list includes two statements labeled c and d. Note that the full set of answer options is missing from the data, so I will analyze the two given statements as they stand.

Option c: 'Melting point curve separates the solid and liquid phases.' In a typical phase diagram, the melting (fusion) line marks the equilibrium between solid and liquid phases at various pressures and temperatures. This line delineates where solid and liquid coexist and indicates the melting point at each pressure. Therefore, this statement is true.

Option d: 'Sublimation means phase transition directly from solid to gas.' Sublimation is defined as a direct phase transition from solid to gas without passing through the liquid phase, which is the standard description of sublimation. Thus, this statement is also true.

Since the question is of type multiple_answers, both c and d are correct according to standard thermodynamics and phase-diagram principles. The absence of the other options in the provided data means we cannot assess them, but among the given statements, both are accurate and consistent with established concepts.

Which of following statements is/are true?

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