SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A + B
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AB
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A + CD
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AB + CD
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Detailed explanation-1: -The general equation for a combination reaction is A + B–> AB. Ca (s) + S (s)–> CaS represents a reaction where calcium combines with sulfur to form the product calcium sulfide. The reactants in a combination reaction can be diatomic molecules. Diatomic molecules exist as two atoms.
Detailed explanation-2: -A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.
Detailed explanation-3: -A chemical reaction in which two or more substances combine to form a single new substance is called a combination reaction.
Detailed explanation-4: -In this reaction, carbonic acid decomposes to form water and carbon dioxide gas. Hence, this is the example of a decomposition reaction.