If the temperature of an object is $140^{\circ}F$,then its temperature in Celsius is ........ $^{\circ}C$.

At what temperature are the centigrade (Celsius) and Fahrenheit readings the same?

Check whether the following statements are True or False:
$(a)$ The equation to convert Celsius temperature to Fahrenheit is $t^{\circ}F = \frac{5}{9}t^{\circ}C + 32$.
$(b)$ For an ideal gas,absolute zero temperature is $273.15^{\circ}C$.
$(c)$ The volume of water is maximum at $4^{\circ}C$.
$(d)$ The temperature gradient is negative if a cube block is heated at the cold end and heat transfers to the hot end.

The phenomenon of superconductivity is observed at a temperature of $95 \ K$. The corresponding temperature on the Fahrenheit scale is ...... $^\circ F$.

$A$ calorie is defined as the amount of heat required to raise the temperature of $1 \, g$ of water by $1^{\circ} C$. Under which of the following conditions is this defined?

$A$ thermocouple is a device for the measurement of