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A chemical reaction in which two or more substances combine to form a single new substance is called:

A{'text': 'A combination reaction'}
B{'text': 'A decomposition reaction'}
C{'text': 'A displacement reaction'}
D{'text': 'A double-displacement reaction'}
Answer & Solution
Correct answer: A. {'text': 'A combination reaction'}
1. A chemical reaction is classified by how reactants and products are arranged. 2. When two or more substances unite to form one new product, the general form is A + B → AB. 3. This pattern is called a **combination (synthesis) reaction**. 4. Example: C + O₂ → CO₂. _Source: Selina Concise ICSE Class 8 Chemistry Ch 6 "Chemical Reactions", Types of chemical reactions_
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