Answer:
True
Explanation:
Chemical reactions are broadly classified as:
1) Synthesis or combination reaction in which two or more substances react to form a single product
2) Decomposition reaction in which a complex substance breaks down into simpler molecules
3) Combustion reaction in which a substance like a hydrocarbon reacts with oxygen to form an carbon dioxide and water
4) Single displacement reaction in which a more reactive element replaces a less reactive element
5) Double displacement reaction which involves exchange of ions in solution
The given reaction is:
2NO + O2 → 2NO2
Here two substances combine to form a single molecule. This is an example of a synthesis reaction.