MCQ
………is a combination reaction.
  • A
    $Cu + H _2 SO _4 \rightarrow CuSO _4+ H _2$
  • $H _2+ Cl _2 \rightarrow 2 HCl$
  • C
    $2 HgO \stackrel{\Delta}{\longrightarrow} 2 Hg + O _2$
  • D
    $CaCO _3 \stackrel{\Delta}{\longrightarrow} CaO + CO _2$

Answer

Correct option: B.
$H _2+ Cl _2 \rightarrow 2 HCl$
$H _2+ Cl _2 \rightarrow 2 HCl$

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