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Chemical Reactions and Equations — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceChemical Reactions and Equations1 Mark
MCQ
Which of the following is a decomposition reaction?
  • A
    $\mathrm{NaOH}+\mathrm{HCl} \rightarrow \mathrm{NaCl}+\mathrm{H} 2 \mathrm{O}$
  • B
    $\mathrm{NH}_4 \mathrm{CNO} \rightarrow \mathrm{H}_2 \mathrm{NCONH}_2$
  • ✓
    $2\mathrm{KClO}_3 \rightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2$
  • D
    $\mathrm{H} 2+\mathrm{I}_2 \rightarrow 2 \mathrm{HI}$
✓

Answer

Correct option: C.
$2\mathrm{KClO}_3 \rightarrow 2 \mathrm{KCl}+3 \mathrm{O}_2$
A decomposition reaction is one in which a reactant breaks down into simpler products.
Option $C$ is an example of a decomposition reaction.

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