NEET Physics Thermodynamics Questions Solved


Which one of the following gases possesses the largest internal energy ?

(1) 2 moles of helium occupying 1m3 at 300 K

(2) 56 kg of nitrogen at  Nm–2 and 300 K

(3) 8 grams of oxygen at 8 atm and 300 K

(4) 6 × 1026 molecules of argon occupying 40 m3 at 900 K

(2) ΔU=μCVΔT=mMCVΔT=NNACVΔT

(ΔU)N=56×10328×52R×300

and (ΔU)Ar=6×10266×1023×32R×900(ΔU)Ar>(ΔU)N

Difficulty Level:

  • 12%
  • 55%
  • 16%
  • 19%
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