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If helium and oxygen gas are allowed to ...

If helium and oxygen gas are allowed to escape out of a container containing equal amount of He and `O_2` under slmllar conditions of temperature and pressure the ratio of rate of diffusion of `O_2` to that of He is

A

`1/2`

B

2

C

`1/(2sqrt2)`

D

`2 sqrt 2`

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AAKASH INSTITUTE ENGLISH-Test-12-Exercise
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  15. Which of the following is formed when K2Cr2O7, CaCl2 and conc. H2SO4 a...

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