Which of the following units are used to measure temperature?
A
Kelvin and Celsius
B
Kelvin and Fahrenheit
C
Kelvin and mmHg
D
Celsius and Fahrenheit
Correct Option:
D
Explanation
Celsius and Fahrenheit are both widely used temperature scales, especially in ordinary thermometers, so the paper's intended answer is Celsius and Fahrenheit. However, this MCQ is scientifically ambiguous: Kelvin is also a valid temperature unit and is the SI base unit of thermodynamic temperature, meaning alternatives containing Kelvin also include legitimate temperature units. The only clearly invalid combination is Kelvin with mmHg, because mmHg measures pressure, not temperature.
