Which of the following-are together called fluids?

The process which keep our atmosphere warm is 

Unit of heat in SI system

Which among the following  is the spontaneous transfer of heat energy from a region of higher temperature to a region of lower temperature?

Which of the following is a measure of the average energy of the particles in a substance?

The normal temperature of our body is:

In the process of radiation, energy transmits as

       Name the process by which heat energy from the sun reaches the surface of the earth

Mercury thermometer was invented in the year-

Name the device used to measure temperature