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Q.

The vapour density of a gaseous mixture of non-reactive gases 'A' and 'B' is 40. If the moler mass of gas 'A' is 20 g/mol and the mixture contains the gases in 2 : 3 volume ratio, then the molar mas of gas 'B' is :

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a

120

b

60

c

40

d

1603

answer is C.

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Detailed Solution

The molar mass can be calculated as,

80=2×20+3×M5

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