Noble gases are adsorbed by (a) Anhydrous \( \mathrm{CaCl}_{2} \) (b) \( \mathrm{Fe}(\mathrm{OH}...

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Noble gases are adsorbed by
(a) Anhydrous \( \mathrm{CaCl}_{2} \)
(b) \( \mathrm{Fe}(\mathrm{OH})_{3} \)
(c) Conc. \( \mathrm{H}_{2} \mathrm{SO}_{4} \)
(d) Activated coconut charcoal
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