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4. At a pressure of

24×105 dyne/cm2 , the volume of O2 is 10 litre and mass is 20 gm. The m.s. velocity will be

(a) 800 m/sec                                 (b)  400 m/sec

(c)   600 m/sec                              (d)  Data is incomplete

Answer-c

(4)

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