MCQ
निम्न में से कौन अवकारक है?
  • A
    $\mathrm{H}_{2}$
  • B
    $\mathrm{CO}$
  • C
    $\mathrm{O_2}$
  • $\mathrm{H}_{2} \mathrm{S}$

Answer

Correct option: D.
$\mathrm{H}_{2} \mathrm{S}$
d

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