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mcq chemistry

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ashish:
ok one MCQ question

In 1982, LOrd Rayleigh made 'atmospheric nitrogen' by removing oxygen from atmosphere .he found the density of this nitrogen to be 1.2572gdm-3 at s.t.p . Chemically pure nitrogen has a density of 1.2505gdm-3.

which gas was present in 'atmospheric nitrogen' to create this discrepancy?

A argon
B helium
C methane
D neon

Deadly_king:

--- Quote from: ashish on November 04, 2010, 04:04:25 pm ---ok one MCQ question

In 1982, LOrd Rayleigh made 'atmospheric nitrogen' by removing oxygen from atmosphere .he found the density of this nitrogen to be 1.2572gdm-3 at s.t.p . Chemically pure nitrogen has a density of 1.2505gdm-3.

which gas was present in 'atmospheric nitrogen' to create this discrepancy?

A argon
B helium
C methane
D neon

--- End quote ---

I guess it should be Argon since it is the most abundant inert gas in atmospheric air.

If you try to calculate the Ar of the gas present, it does not lead to any of the answers. :-\

ashish:
ah ok thank you !

Deadly_king:

--- Quote from: ashish on November 05, 2010, 08:18:20 am ---ah ok thank you !

--- End quote ---

Anytime br0 ;)

But am not 100% confident.

If possible contact your teacher for confirmation. :)

hell0:
Oh wheww
I did a double bond for the C2O question

Paper 32 ppl: How did you find the organic part of the paper?

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