The reaction in which two or more substances combine to form one substance is called a synthesis reaction, Option A is the correct answer.
What do you understand by a synthesis reaction ?
The reaction in which two or more molecules combine to form one or more different molecule is called a synthesis reaction.
These are also called as Combination Reaction.
Example Synthesis reaction of Ammonia from Hydrogen and Nitrogen , known as Haber's Process.
3H₂ + N₂-----> 2NH₃
This reaction takes place at high temperature and pressure.
Therefore , The reaction in which two or more substances combine to form one substance is called a synthesis reaction, Option A is the correct answer.
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