39. At a given temperature the r.m.s. velocity of molecules of the gas is
(a) Same
(b) Proportional to molecular weight
(c) Inversely proportional to molecular weight
(d) Inversely proportional to square root of molecular weight
Answer-d
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a