What is the type of the following chemical reaction?

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Combination

Decomposition

Synthesis

Displacement

answer is C.

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Detailed Solution

Concept- We can observe from the reaction that a calcium carbonate molecule disintegrates into a calcium oxide molecule and a carbon dioxide molecule. Despite there being just one reactant, there are two products. Therefore, we can infer that the calcium carbonate is decomposing and that this reaction is a type of decomposition reaction.
Let us understand all the alternatives-
The reactants will combine to create just one product when combined. It will entail the direct fusion of two reactant molecules without any atoms from the starting molecules being lost.
In displacement reactions, a more reactive ion displaces or replaces a comparable ion, creating a more stable or advantageous molecule.
In a decomposition reaction, a single molecule is split into two or more relatively stable pieces that do not instantly recombine to form the original molecule.
Synthesis reactions can be redox reactions but are more frequently combination reactions.
Hence, the correct answer is option 3.

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