MCQ
Functional group present in sulphonic acid is:
  • A
    $\mathrm{SO}_4 \mathrm{H}$
  • $\mathrm{SO}_3 \mathrm{H}$
  • C

  • D
    $-\mathrm{SO}_2$

Answer

Correct option: B.
$\mathrm{SO}_3 \mathrm{H}$
b
Group present in sulphonic acids

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