MCQ
द्वि-विस्थापन अभिक्रिया का उदाहरण है
  • A
    $2 \mathrm{KBr}(\mathrm{aq})+\mathrm{Cl}_{2}(\mathrm{aq}) \rightarrow 2 \mathrm{KCl}(\mathrm{aq})+\mathrm{Br}_{2}$
  • B
    $\mathrm{Fe}(\mathrm{s})+\mathrm{S}(\mathrm{s}) \rightarrow \mathrm{FeS}(\mathrm{s})$
  • $\mathrm{CuSO}_{4}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{S}(\mathrm{g}) \rightarrow \mathrm{CuS}(\mathrm{s})+\mathrm{H}_{2} \mathrm{SO}_{4}(\mathrm{aq})$
  • D
    $\mathrm{CuSO}_{4}(\mathrm{aq})+\mathrm{Fe}(\mathrm{s}) \rightarrow \mathrm{FeSO}_{4}(\mathrm{aq})+\mathrm{Cu}(\mathrm{s})$

Answer

Correct option: C.
$\mathrm{CuSO}_{4}(\mathrm{aq})+\mathrm{H}_{2} \mathrm{S}(\mathrm{g}) \rightarrow \mathrm{CuS}(\mathrm{s})+\mathrm{H}_{2} \mathrm{SO}_{4}(\mathrm{aq})$
c

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