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Figure shows the variation in temperature ( T ) with the amount of heat supplied (Q) in an isobaric process corresponding to a monoatomic (M) , diatomic (D) and a polyatomic (P) gas. The initial state of all the gases are the same and the scales for the two axes coincide. Ignoring vibrational degrees of freedom, the lines a, b and c respectively correspond to :

Options

  1. AP , M and D
  2. BM , D and P
  3. CP , D and M
  4. DD , M and P

Correct answer

B. M , D and P

Step-by-step solution

On giving same amount of heat at constant pressure, there is no change in temperature for mono, dia and polyatomic. ( Q )_ P = C _ p T ( = No. of molecules Avogedro's no. ) or T 1 no. of molecules

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