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Q70 (CAPF/2024) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Thermal physics

Which one among the following statements about matter is NOT correct?

Result
Your answer:  ·  Correct: B
Explanation

Statement 2 is incorrect because the melting point is defined as the specific temperature at which a solid changes into a liquid at atmospheric pressure, not the 'maximum temperature'. During the melting process, the temperature remains constant as the added thermal energy is used to overcome interparticle forces rather than increasing the temperature further. Statement 1 is correct as increasing temperature increases the kinetic energy and vibrations of solid particles [1]. Statement 3 is correct because steam at 100°C contains more energy than water at the same temperature due to the latent heat of vaporization absorbed during the phase change [1]. Statement 4 is correct as the direct transition from a gas to a solid is scientifically termed deposition.

Sources

  1. [1] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 7: Particulate Nature of Matter > Ever heard of ... > p. 112
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