MCQ
निम्नांकित में कौन उपचायक है?
  • A
    $\mathrm{H}_{2}$
  • B
    CO
  • $\mathrm{O}_{2}$
  • D
    $\mathrm{H}_{2} \mathrm{S}$

Answer

Correct option: C.
$\mathrm{O}_{2}$
c

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