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P-V plots for two gases during adiabatic expansion are shown in figure. Plots 1 and plots 2 should correspond respectively to

Options

  1. AH e and O 2
  2. BO 2 and H e
  3. CH e and A r
  4. DO 2 and N 2

Correct answer

B. O 2 and H e

Step-by-step solution

PV 5/3 &#x2004; = &#x2004; constant &#x2004; for &#x2004; He &#x03B3; &#x2004; = &#x2004; 5 3 PV 7/5 &#x2004; = &#x2004; constant &#x2004; for &#x2004; O 2 &#x03B3; &#x2004; = &#x2004; 7 5 &#x2234; &#x2004; For &#x2004; the &#x2004; same &#x2004; decrease &#x2004; in &#x2004; V P O 2 < P H e

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