CBSE Class 10 Science
Question 25 of 60
Solved 2022 Term 1 Question Paper CBSE Class 10 Science — Question 1
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Question Question 25
Which one of the following reactions is categorized as a thermal decomposition reaction?
- 2H2O (l) ⟶ 2H2(g) + O2 (g)
- 2AgBr(s) ⟶ 2Ag(s) + Br2(g)
- 2AgCl(s) ⟶ 2Ag(s) + Cl2(g)
- CaCO3(s) ⟶ CaO(s) + CO2(g)
CaCO3 (s) ⟶ CaO(s) + CO2 (g)
Reason — The decomposition of CaCO3 is carried out by heating hence the above reaction is a thermal decomposition reaction.