Conversion of limestone to quick lime is an example of

Join Our Telegram Channel

decomposition reaction.

substitution reaction.

combination reaction.

double decomposition reaction.

Answer is Right!

Answer is Wrong!

This question was previously asked in

UPSC CISF-AC-EXE – 2021

Download PDF Attempt Online

Limestone is primarily calcium carbonate (CaCO₃). Quick lime is calcium oxide (CaO). The conversion of limestone to quick lime involves heating calcium carbonate to a high temperature, which causes it to break down into calcium oxide and carbon dioxide gas: CaCO₃ (s) → CaO (s) + CO₂ (g). This reaction where a single compound breaks down into two or more simpler substances is called a decomposition reaction.

Decomposition reaction: A single reactant breaks down into simpler products.
Combination reaction: Two or more reactants combine to form a single product.
Substitution reaction: An atom or group is replaced by another atom or group.
Double decomposition reaction: Two compounds exchange ions or groups to form two new compounds.

This process, the thermal decomposition of calcium carbonate, is known as calcination or lime burning and is carried out in a kiln.

More similar MCQ questions for Exam preparation:-