Question

Which one of the following is not correctly matched?

  1. Decibel–unit of loudness of sound
  2. Horse power–unit of power
  3. Nautical mile–unit of distance in navigation
  4. Celsius–unit of heat

Answer:

Option D: Celsius–unit of heat

Detailed Solution:

The correct answer is “Celsius–unit of heat”.

The answer is (4) Celsius – unit of heat. Celsius (°C) is a unit of temperature, not heat. Heat refers to the transfer of thermal energy, while temperature is a measure of how hot or cold something is.