Questions on Temperature and Temperature Scales
Multiple-Choice Questions – Temperature and Temperature Scales
1. What does temperature measure?
A) The total heat energy
B) The average kinetic energy of particles
C) The potential energy of a substance
D) The number of particles
E) The amount of mass
2. Which scale is most commonly used in the United States for measuring temperature?
A) Kelvin
B) Celsius
C) Fahrenheit
D) Rankine
E) Centigrade
3. What is the freezing point of water in Celsius?
A) 32°C
B) 273°C
C) 100°C
D) 0°C
E) -32°C
4. What is the boiling point of water in Fahrenheit?
A) 212°F
B) 100°F
C) 0°F
D) 273°F
E) 98.6°F
5. Which temperature scale starts at absolute zero?
A) Fahrenheit
B) Celsius
C) Kelvin
D) Rankine
E) Newton
6. What is absolute zero in Kelvin?
A) 0°C
B) 273 K
C) 100 K
D) 373 K
E) 0 K
7. Which of the following best describes absolute zero?
A) Water freezes
B) All particle motion stops
C) Water boils
D) Air becomes a solid
E) Metal melts
8. The SI unit of temperature is:
A) Fahrenheit
B) Celsius
C) Kelvin
D) Degree
E) Joule
9. What is the Celsius equivalent of 32°F?
A) 0°C
B) 32°C
C) 100°C
D) -32°C
E) 10°C
10. Which formula converts Celsius to Fahrenheit?
A) F = C + 32
B) F = C × 2
C) F = (C × 9/5) + 32
D) F = (C + 32) ÷ 9
E) F = (C – 32) × 5/9
11. What is the boiling point of water in Kelvin?
A) 273 K
B) 100 K
C) 373 K
D) 212 K
E) 300 K
12. Which is the correct temperature conversion for 0°C?
A) 273 K
B) 100 K
C) 32 K
D) 32°F
E) Both A and D
13. Which statement is true?
A) Celsius is used mostly in scientific research in the US
B) Fahrenheit is the SI unit
C) 0 K is hotter than 0°C
D) Kelvin uses the degree symbol
E) Celsius and Fahrenheit are interchangeable
14. What is the normal human body temperature in Celsius?
A) 98.6°C
B) 100°C
C) 36.5°C–37°C
D) 212°C
E) 32°C
15. What is the lowest possible temperature?
A) -273°F
B) -273°C
C) 0°F
D) 0°C
E) -100°C
16. What happens to particle motion as temperature increases?
A) Particles stop moving
B) Particle motion decreases
C) Particles move faster
D) Temperature stays the same
E) Particles vanish
17. A Celsius thermometer shows 25°C. What is the equivalent in Fahrenheit?
A) 75°F
B) 50°F
C) 68°F
D) 77°F
E) 90°F
18. How are Kelvin and Celsius related?
A) K = °C + 273
B) K = °C × 273
C) K = °C ÷ 2
D) K = °C – 273
E) K = °C + 32
19. Which of the following is a correct temperature conversion?
A) 0 K = 0°C
B) 100°C = 373 K
C) 100°F = 212°C
D) 32°F = 32 K
E) 212°C = 100°F
20. Which scale has no negative values?
A) Celsius
B) Fahrenheit
C) Kelvin
D) Centigrade
E) Rankine
Answer Key with Explanations
1. B) The average kinetic energy of particles
Temperature reflects how fast particles are moving on average.
2. C) Fahrenheit
Fahrenheit is still widely used in daily life in the U.S.
3. D) 0°C
This is the freezing point of water in Celsius.
4. A) 212°F
Water boils at 212°F under standard conditions.
5. C) Kelvin
Kelvin begins at absolute zero, the theoretical coldest temperature.
6. E) 0 K
This is absolute zero on the Kelvin scale.
7. B) All particle motion stops
At absolute zero, all molecular motion theoretically ceases.
8. C) Kelvin
Kelvin is the SI (International System) unit of temperature.
9. A) 0°C
32°F equals 0°C.
10. C) F = (C × 9/5) + 32
This is the correct conversion from Celsius to Fahrenheit.
11. C) 373 K
100°C + 273 = 373 K.
12. E) Both A and D
0°C equals 273 K and 32°F.
13. A) Celsius is used mostly in scientific research in the US
Although Fahrenheit is common in daily life, science uses Celsius or Kelvin.
14. C) 36.5°C–37°C
Normal human body temperature in Celsius.
15. B) -273°C
This is equivalent to 0 K, the lowest possible temperature.
16. C) Particles move faster
As temperature rises, so does particle motion.
17. D) 77°F
F = (25 × 9/5) + 32 = 77°F.
18. A) K = °C + 273
This is how Celsius and Kelvin are related.
19. B) 100°C = 373 K
Correct conversion: 100 + 273 = 373 K.
20. C) Kelvin
Kelvin starts at 0 and increases — no negative values.
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