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This question tests knowledge of the equivalence of temperature values across scales. Option A (0°C, 32°F, 273 K) is incorrect — these three values represent the freezing point of water, not the boiling point. 0°C = 32°F = 273 K is the freezing/melting point equivalence. Option B (37°C, 98.6°F, 310 K) is incorrect — these values represent the normal human body temperature, not the boiling point of water. 37°C = 98.6°F = 310 K is an extremely important set for health and medical topics in competitive exams. Option C (100°C, 180°F, 373 K) is incorrect — 100°C and 373 K are correct for the boiling point, but 180°F is WRONG. 180 is the number of Fahrenheit degrees between freezing (32°F) and boiling (212°F), not the boiling point itself. The boiling point in Fahrenheit is 212°F, not 180°F. Option D (100°C, 212°F, 373 K) is CORRECT — the boiling point of pure water at standard atmospheric pressure is 100°C = 212°F = 373.15 K (≈ 373 K). This is a fundamental fact tested in SSC, Railway, UPSC, and all government exams. Conversion check: F = (9/5)×100 + 32 = 180 + 32 = 212°F ✓; K = 100 + 273 = 373 K ✓.
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Common questions and clear answers for this topic.
Heat is a form of energy that transfers between objects or systems due to a temperature difference, moving from a hotter body to a cooler one until thermal equilibrium is reached.
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