Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following statements about the melting point and thermal equilibrium of a substance is correct?
A
The melting point is the temperature at which solid and liquid phases are in thermal equilibrium.
B
The melting point is constant regardless of the pressure applied to a substance.
C
The melting point can vary significantly between different substances without relation to their molecular structure.
D
The melting point is only relevant for pure substances and not for mixtures.
Correct Answer
Option A
Detailed Explanation
The melting point is defined as the temperature at which the solid and liquid states of a substance are in thermal equilibrium with each other, which is characteristic of the substance and also depends on pressure.
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