The correct option is A True
The given statement is true.
Dry O2 is heavier than moist O2.
PM=dRT
Thus, density is directly proportional to the molecular weight.
The
molecular weights of O2 and H2O
are 32 g/mol and 18 g/mol respectively. Hence, the average molecular
weight of moist O2 is less than the molecular weight
of dry O2. Hence, dry O2 is
heavier than moist O2.