Exercise 1

The absolute zero is the temperature at which

On the Celsius scale the absolute zero of temperature is at

Select correct statement related to heat

What is the temperature at which we get the same reading on both the centigrade and Fahrenheit scales?

Value of $-40°\mathrm{C}$ in Fahrenheit scale is:

If $H_C,H_K$ and $H_F$ are heat required to raise the temperature of one gram of water by one degree in Celsius, Kelvin and Fahrenheit temperature scales respectively then:

A calorimeter of water equivalent $20 \mathrm{g}$ is filled with $230 \mathrm{g}$ water at $20°\mathrm{C}$. An unknown solid of mass $150 \mathrm{g}$ heated to a temperature of $75°\mathrm{C}$ is put into the calorimeter and the system is thermally insulated from the surroundings. The final temperature of the system is found to be $25°\mathrm{C}$. The water equivalent of the solid is

Latent heat of steam is $536 \mathrm{cal} {\mathrm{gm}}^{-1},$ then its value in $\mathrm{joule} {\mathrm{kg}}^{-1}$ is: