Thermo Intro

Zeroth law of thermodynamics is:

• Kinetic energy of molecules of a gas is zero

• Ideal gas does not contain molecules

• If two systems are in thermal equilibrium third one is also in equilibrium

• Absolute zero temperature cannot be obtained

________________is intensive variable

Correct Meyer's relation

• Cp-Cv = R

  
  

• Cv-Cp = R

• Cv+Cp = R

Rudolf Clausius stated the basic ideas of _____law of thermodynamics.

• first

• second

• zeroth

If work is done by the system, the internal energy of the system decreases, then work done by the system is taken as--------

• negative

• positive