Lesson 5.1.1

5.1.1 Temperature Quiz: OCR Physics, Unit 4

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 5.1.1, Temperature: 20 multiple choice questions for the OCR Physics (H156), Unit 4: Newtonian world and astrophysics, written with Revision Ninja.

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The 20 questions

  1. What condition must be met for two bodies to be in thermal equilibrium?

    • Equal temperature
    • Equal mass
    • Equal heat capacity
    • Equal internal energy

  2. What key characteristic defines the thermodynamic temperature scale?

    • Atmospheric pressure
    • Substance independence
    • Water freezing point
    • Mercury expansion

  3. Absolute zero corresponds to which Celsius temperature?

    • 273 C
    • -100 C
    • 0 C
    • -273 C

  4. Convert 27 C to kelvin.

    • 273 K
    • 300 K
    • 27 K
    • 246 K

  5. Convert 300 K to degrees Celsius.

    • 300 C
    • 573 C
    • 27 C
    • -27 C

  6. A temperature difference of 50 C is equal to a temperature difference of:

    • 273 K
    • 50 K
    • -50 K
    • 323 K

  7. What is the state of a substance's internal energy at absolute zero?

    • Zero kinetic energy
    • Zero total mass
    • Minimum internal energy
    • Maximum potential energy

  8. A body is at -40 C. What is its temperature in kelvin?

    • 233 K
    • 313 K
    • -40 K
    • 273 K

  9. A body has a temperature of 373 K. What is this in degrees Celsius?

    • 0 C
    • 373 C
    • 646 C
    • 100 C

  10. Net thermal energy transfer between two contacting objects continues until they reach what state?

    • Phase transition
    • Absolute zero
    • Thermal expansion
    • Thermal equilibrium

  11. A gas is heated from 27 C to 327 C. What is the ratio of the final to the initial thermodynamic temperature?

    • 2
    • 1.5
    • 300/327
    • 12

  12. Why does a thermometer accurately measure the temperature of an object?

    • It expands constantly
    • It reaches equilibrium
    • It insulates heat
    • It transfers heat

  13. What is identical in magnitude on both the Celsius and Kelvin temperature scales?

    • Freezing point
    • Absolute zero
    • Temperature interval
    • Boiling point

  14. An oven is at 200 C and a room is at 20 C. What is the temperature difference in kelvin?

    • 180 C
    • 220 K
    • 180 K
    • -180 K

  15. Two objects at 350 K and 77 °C are placed in contact. What is the net heat flow?

    • Flows to 77 °C
    • Infinite heat flow
    • Flows to 350 K
    • Zero heat flow

  16. The Kelvin and Celsius scales differ in zero point by approximately:

    • 100
    • 32
    • 273
    • 1

  17. What is the thermodynamic temperature in kelvin of melting ice at 0 C?

    • 273 K
    • 0 K
    • 100 K
    • 373 K

  18. A fridge is held at 4 C. What is this temperature in kelvin?

    • 4 K
    • -4 K
    • 277 K
    • 269 K

  19. A kelvin scale temperature rises from 250 K to 300 K. By how much does the Celsius temperature change?

    • -50 C
    • 50 C
    • 323 C
    • 27 C

  20. Why is the Kelvin temperature scale considered absolute?

    • Fixed to atmosphere
    • Based on water
    • Independent of substance
    • Uses negative values

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