The reaction 2no(g) + o2(g) → 2no2(g) is a synthesis reaction.

True, the reaction given is an example of a synthesis reaction

Explanation:Synthesis reactions are reactions where two or more substances combine to form a single compound.The reaction 2NO(g) + O₂(g) → 2NO₂(g) is an example of a synthesis reaction.

Other types of chemical reactions may include;

Decomposition reaction in which a compound is broken down into smaller compounds or individual elements.Replacement reaction where reactive elements replace other less reactive elements in their salts.Precipitation reactions in which soluble salts reacts to form a precipitate and a soluble salt as a result of exchange of anions and cations.