A) \[Ne\] and \[Kr\]
B) \[He\] and \[Ar\]
C) \[Ar,\] \[Kr,\] \[Xe\]
D) \[He\] and \[Ne\]
Correct Answer: C
Solution :
Except He, all other noble gases are adsorbed by coconut charcoal at low temperatures. The extent of adsorption increases as the atomic size of the noble gas increases.
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