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KH Value for Ar(g),CO2(g), HCHO(g) and ...

`K_H` Value for `Ar(g),CO_2(g), HCHO(g) and CH_(4)` (g) are 40.39, 1.67, `1.83 xx 10^(-5)` and 0.413 respectively. Arrange these gases in the order of their increasing solubility.

A

`HCHO lt CH_(4) lt CO_2 lt Ar`

B

`HCHO lt CO_2 lt CH_4 lt Ar`

C

`Ar lt CO_2 lt CH_4 lt HCHO`

D

`Ar lt CH_4 lt CO_2 lt HCHO`

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The correct Answer is:
C
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