Standardisation of thermometers is obtained with

The temperature of the hot junction of a thermocouple is increased from $80\,\,^{\circ}\text{C}$ to $100\,\,^{\circ}\text{C}$. The percentage change in the thermoelectric power will be ............ $\%$.

The graph $AB$ shown in the figure is a plot of the temperature of a body in degree Celsius $(C)$ versus degree Fahrenheit $(F)$. Then:

How many fixed points does an absolute Kelvin scale have? Write their values.

At $NTP$,water boils at $100^{\circ}C$. Deep down in a mine,water will boil at a temperature:

Maximum density of $H_2O$ is at the temperature