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Doctors Medicines MCQs Q&A

Which of the following combinations is wrong ? 

A) 2N2O → 2N2+ O2 – decomposition 

B) Ca + 2H2O → Ca(OH)2 – combination 

C) Zn + 2 HCl → ZnCl2 + H2 – double decomposition 

D) Zn + H2 SO4 → ZnSO4 + H2 – displacement

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1 Answers

C) Zn + 2 HCl → ZnCl2 + H2 – double decomposition 

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