What type of reaction occurs when limestone gets converted int... | General Science MCQ

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What type of reaction occurs when limestone gets converted into quicklime on heating?

Decomposition

Combination

Displacement

Double displacement

Correct Answer

🔬 SC • Science Chemical ReactionsGeneral SciencePrevious Year Paper 2024

Option A

Decomposition

Quick Summary:

Thermal decomposition of calcium carbonate (limestone)

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📌 Key Points

▸
Limestone: $\text{CaCO}_3$
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Quicklime: $\text{CaO}$
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Reaction: $\text{CaCO}_3 \xrightarrow{\Delta} \text{CaO} + \text{CO}_2$ (Decomposition)

📊 Diagram / Illustration

📋 Steps

Identify Chemical Species

• Limestone = Calcium carbonate ( $\text{CaCO}_3$ ) • Quicklime = Calcium oxide ( $\text{CaO}$ )

Write Balanced Chemical Equation

$\text{CaCO}_3(s) \xrightarrow{\Delta} \text{CaO}(s) + \text{CO}_2(g)$

Classify the Reaction

A single reactant breaks down into multiple simpler substances upon heating. Hence, it is a thermal decomposition reaction.

Reaction type is Decomposition.

✅

Decomposition

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