The noble gas mixture is cooled in a coconut bulb at 173K. The gases that are not adsorbed are:
A
Helium and Neon
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B
Helium and Xenon
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C
Xenon and Neon
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D
none of these
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Solution
The correct option is B Helium and Neon
When the mixture of noble gas is cooled in a coconut bulb at 173K then argon, krypton and xenon are adsorbed on charcoal while Helium and Neon are not adsorbed.