Question

Which of the following is/are Absolute Temperature Scale(s)?
(This question has multiple correct options)
A) Kelvin Scale
B) Rankine Scale
C) Celsius Scale
D) Fahrenheit Scale

Answer 1

In order to find the correct answer of the given question we need to know about the characteristics of different temperature scales. After that we can compare the characteristics with the scales given in the option and finally conclude with the correct answer.

Complete step by step answer:
First of all let us find the absolute zero condition. Absolute zero means $0K$ below which temperatures do not exist.
Now, let us find out the characteristics of the scales that are given in the question.
Kelvin Scale: It is a thermodynamic scale used to measure temperature having an absolute zero scale.
Rankine Scale: This scale is also a thermodynamic scale based on absolute zero temperature.
Celsius Scale: This scale is based on zero degrees for the freezing point of water and hundred degrees for the boiling point of water. It is not an absolute temperature scale but a relative scale.
Fahrenheit Scale: It is based on ${32^\circ }$ for the freezing point of water and ${212^\circ }$ for the boiling point of water. It is also not based on absolute zero temperature.
We can notice from step one that both Kelvin scale and Rankine scales are based on absolute zero temperature.

Hence, options (A) and (B), i.e. Kelvin scale and Rankine scale are the correct choices of the given question.

Note: We should also know this fact that an absolute scale is the one in which the initial point of measurement starts from zero and it moves only in one direction. Temperatures below zero cannot be measured using this scale.