Q.

The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecule is

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a

1 : 4

b

7 : 32

c

1 : 8

d

3 : 16

answer is B.

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Detailed Solution

Given ratio of masses of oxygen and nitrogen = 1:4Let mass of O2 = xMass of N2 = 4xMolecules of O2 = x32NAMolecules of N2 =4x28NA Ratio of number of molecules= 7 : 32
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The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio of number of their molecule is