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MCQ
Which of the following is a combination reaction?
Unit-6 Stoichiometry
A CaCO3 gives CaO + CO2
B 2H2O gives 2H2 + O2
C 2Mg + O2 gives 2MgO
D Zn + HCl gives ZnCl2 + H2
Explanation

Magnesium and oxygen combine to form a single product MgO, a combination reaction.

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