Question

The charcoal maintained at $100^{o}C$ absorbs.

• A. $Ne$ and $Kr$
• B. $He$ and $Ar$
• C. $Ar,$ $Kr,$ $Xe$
• D. $He$ and $Ne$

Answer 1

Answer: (C)

$Ar,$ $Kr,$ $Xe$

Answer 2

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.