A pyrometer is calibrated to measure temperatures in the range of 500°C to 2500°C. Which of the following is NOT a valid reason for choosing a pyrometer over a thermocouple in this temperature range?

In a mercury thermometer the ice point (lower fixed point) is marked as ${10^0}$ and the steam point (upper fixed point) is marked as ${130^0}$. At ${40^0}C$ temperature, what will this thermometer read

Two temperature scales A and B are related by $\frac{{A - 42}}{{110}}$ = $\frac{{B - 72}}{{220}}$. At which temperature two scales have the same reading?

Very low temperatures are measured by

The freezing point of water on a thermometer is marked as ${20^{\rm{o}}}X$ and the boiling point as ${150^{\rm{o}}}X$ . A temperature of ${80^{\rm{o}}}C$  on this thermometer will be read as

Oxygen boils at $- {183^0}C$. This temperature is approximately

On Which of the following scales of temperature, the temperature is never negative

Which substance is commonly used in laboratory thermometers?

Mercury boils at ${367^0}C$. However, mercury thermometers are made such that they can measure temperature up to ${500^0}C$. This is done by

Which of the following is the SI unit of temperature?

A faulty thermometer reads the melting point of ice as $-10^\circ C$ and the boiling point of water as $110^\circ C$. What will be the correct temperature if this faulty thermometer reads $50^\circ C$?