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Chemical Reactions and Equations — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceChemical Reactions and Equations1 Mark
MCQ
When a decomposition reaction is carried out by heating then it is called _______.
  • A
    Exothermic reaction.
  • B
    Thermal decomposition.
  • C
    Endothermic reaction.
  • D
    Dispalcement reaction.
✓

Answer

  1. Thermal decomposition.

Explanation:

When a decomposition reaction is carried out by heating then it is called thermal decomposition reaction. 

For example,

CaCO3(s) + Heat → CaO(s) + CO2(g)

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