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  9. Q63

OPSC OCS 2025 · Question 63 of 84

Consider the following statements about the Mpemba effect. (2025) I. Freezing of hotter water faster than colder water under specific conditions. II. JLN Advanced Scientific Research has used supercomputers to develop the first simulation of ice formation proving the Mpemba effect of water. III. Named after Nigerian scientist Erasto Mpemba, who rediscovered it in 1969. IV. Aristotle, Robert Hooke and Descartes have noted about this experiment earlier. V. Relaxation of materials due to sudden temperature changes is technically called out-ofequilibrium phenomena. How many of the above statements are true?

Current Affairs

  1. AOnly 1
  2. BOnly 2
  3. COnly 3Correct
  4. DOnly 4

Answer: C. Only 3

Explanation

Statement I is correct: The Mpemba effect describes the counterintuitive observation where hotter water can freeze faster than colder water under specific conditions. Statement II is correct: Researchers at the Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) in…

Source: OPSC OCS Prelims 2025 GS Paper-I (Set D); answers per Apti Plus unofficial key

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