Q1. Heat transfer from the Sun to the Earth takes place by:
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Answer: B. Radiation
Radiation needs no medium, so heat reaches Earth from the Sun by radiation.
Physics - Heat Questions for SSC CGL (with Answers)
7 Physics - Heat MCQs from the General Awareness section, with answers and short explanations.
Score: 0 / 0
Q2. Water in an earthen pot (matka) stays cool in summer because of:
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Answer: C. Evaporation
Evaporation through the pot's pores takes latent heat from the water, cooling it.
Q3. Sea breeze during the day is an example of heat transfer by:
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Answer: C. Convection
Land heats faster, warm air rises, and cooler sea air flows in — convection currents.
Q4. The boiling point of pure water at standard atmospheric pressure is:
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Answer: D. 373 K
Water boils at 100 °C = 373 K at standard pressure.
Q5. Pressure cookers cook food faster because:
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Answer: B. Increased pressure raises the boiling point of water
Higher pressure raises water's boiling point, so food cooks at a higher temperature.
Q6. Normal human body temperature, 37 °C, is equal to about:
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Answer: C. 98.6 °F
9/5 × 37 + 32 = 98.6 °F.
Q7. At what temperature do the Celsius and Fahrenheit scales show the same reading?
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Answer: B. −40°
C = 9C/5 + 32 gives C = −40, so −40 °C = −40 °F.
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