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KCET2020ChemistryRedox Reactions

The metal that produce H ₂ with both dil. HCl and NaOH (a q) is

Options

  1. AZn
  2. BMg
  3. CCa
  4. DFe

Correct answer

A. Zn

Step-by-step solution

Zn +2 HCl (dil.) ZnCl ₂+ H ₂ Zn +2 NaOH +2 H ₂ O Na ₂ [ Zn ( OH )₄ ]+ H ₂ But, Mg, Ca and Fe do not produce hydrogen, when react with aqueous NaOH .

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