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Acids, Bases and Salts — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts1 Mark
MCQ
Which gas is released when a metal reacts with an acid?
  • A
    Cl2
  • B
    O2
  • C
    H2
  • D
    SO2
✓

Answer

  1. H2

Explanation:

Metals readily react with acid and produce hydrogen gas which burns with a pop sound.

Metals are placed above hydrogen in reactivity series and displace it during a reaction with an acid.

As acids have a property of giving H+ ions.

A resultant is formed with release of hydrogen gas.​

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