Question

What is the temperature in Kelvin scale, at which water starts boiling?

• A. $0K$
• B. $100K$
• C. $273K$
• D. $373K$

Answer 1

The correct option is D

$373K$

Kelvin is one of the units of temperature. The relation between Celcius and Kelvin scale is as follows
$0^{\circ }C=273K$
To convert a temperature in Celcius scale to Kelvin scale, we have to add 273 to the given temperature in Celcius.
The boiling point of water is ${100}^{\circ }C$.
On Kelvin scale, ${100}^{\circ }C=273+100=373K$