1.

Which of the following is valid at absolute zero?

Answer»

KINETIC energy of the gas becomes ZERO but the MOLECULAR motion does not become zero 
kinetic energy of the gas becomes zero and molecular motion also becomes zero 
kinetic energy of the gas decreases but does not become zero
kinetic energy of the gas decreases but total energy INCREASES 

Solution :At `T = 0, KE = 0`.


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