Q131
General SciencePhysics
Pure water freezes at a temperature
- a.47° F
- b.32° F
- c.0° F
- d.19° F
Answer: (B) 32° F
Pure water freezes at 0°C, which is equivalent to 32°F. The conversion formula is $F = \frac{9}{5}C + 32$; substituting $C = 0$: $F = 32$. This is a fundamental fixed point used in defining the Fahrenheit and Celsius temperature scales.