Which statement about the concept of temperature is NOT true?

Step 1: Analyze the question We need the statement that is NOT true about temperature. Four statements are correct and one is false.

Step 2: The concept Temperature is a measure of the degree of hotness or coldness of a body. It determines the direction of heat flow: heat flows from the body at higher temperature to the body at lower temperature. Temperature has magnitude only and no direction, so it is a scalar quantity.

Step 3: Check each option

• A. True. Heat flows from higher to lower temperature, so temperature decides the direction of heat flow.
• B. True. Coldness is just a low degree of hotness, so temperature measures it.
• C. False. Temperature is a scalar, not a vector, because it has no direction.
• D. True. Temperature measures hotness.
• E. True. Fahrenheit, Celsius and Kelvin are all temperature scales.

Step 4: Answer The statement that is NOT true is C. Temperature is a vector quantity.

Exam tip: Remember that temperature, mass, time, energy and speed are scalars. Force, velocity, displacement and acceleration are vectors. In "NOT true" questions, look for the option that contradicts a basic definition.