The temperature of a substance increases by $27^{\circ}C$. On the Kelvin scale,this increase is equal to ........ $K$.

Which of the curves in the figure represents the relation between Celsius and Fahrenheit temperatures?

Mercury is often used in clinical thermometers. Which one of the following properties of mercury is not a reason for this?

$A$ faulty thermometer reads $5^{\circ}C$ in melting ice and $95^{\circ}C$ in steam. The correct temperature on the absolute scale will be $.........K$ when the faulty thermometer reads $41^{\circ}C$.

$A$ Centigrade and a Fahrenheit thermometer are dipped in boiling water. The water temperature is lowered until the Fahrenheit thermometer registers $140\,^{\circ}F$. What is the fall in temperature as registered by the centigrade thermometer?

At what temperature is the density of water maximum? Provide the value in $^\circ C$, $^\circ F$, and $K$.