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p -Block elements - ll — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistryp -Block elements - ll1 Mark
MCQ
The most efficient agent for the absorption of $S{O_3}$ is
  • A
    $80\% \;{H_2}S{O_4}$
  • ✓
    $98\% \;{H_2}S{O_4}$
  • C
    $50\% \;{H_2}S{O_4}$
  • D
    $20\% \;{H_2}{S_2}{O_7}$
✓

Answer

Correct option: B.
$98\% \;{H_2}S{O_4}$
b
(b) $98\%$ ${H_2}S{O_4}$ is used for absorbing dense fog of acid which is formed by dissolving $S{O_3}$in water. Hence $98\%$ ${H_2}S{O_4}$is the most efficient agent for the absorption of $S{O_3}$.

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