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A gases mixture contains oxygen and nitrogen in the ratio `1 : 4` by weight. Therefore, the ratio of the number of molecules is:

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A gases mixture contains oxygen and nitrogen in the ratio `1 : 4` by weight. Therefore, the ratio of the number of molecules is:
A. `1 : 4`
B. `1 : 8`
C. `7 : 32`
D. `3 : 16`
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Correct Answer - C
Mol. Ratio `O_(2):N_(2)`
`(1)/(32) : (4)/(28)`
Molecules `(N_(A))/(32) : (4N_(A))/(28) implies 7:32`
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