1.

Two gases A and B with their molecular weights 28 and 44 respectively, expand at constant pressures through the same temperature range. The ratio of quantity of work done by the two gases (A : B) is ________.

A. 7 : 11
B. 11 : 7
C. 4 : 11
D. 7 : 4
Answer» C. 4 : 11


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