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
$\mathrm{Cl}_2$
B
$\mathrm{O}_2$
✓
$\mathrm{H}_2$
D
$\mathrm{SO}_2$
✓
Answer
Correct option: C.
$\mathrm{H}_2$
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 $\ce{H^+}$ ions.
A resultant is formed with release of hydrogen gas.
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