NEET Physics Thermodynamics Questions Solved


A gas mixture consists of 2 moles of oxygen and 4 moles argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is 

(1) 4 RT

(2) 15 RT

(3) 9 RT

(4) 11 RT

(4) Oxygen is diatomic gas, hence its energy of two moles =2×52RT=5RT

Argon is a monoatomic gas, hence its internal energy of 4 moles =4×32RT=6RT

Total Internal energy = (6 + 5)RT = 11RT

Difficulty Level:

  • 5%
  • 11%
  • 24%
  • 62%
Crack NEET with Online Course - Free Trial (Offer Valid Till August 25, 2019)