Answer : Equation A represents a combination reaction, and equation B represents a combustion reaction.
Explanation :
In this reaction, hydrogen react with the chlorine to form a single product as hydrogen chloride. So, this reaction is a combination reaction.
Combination reaction : It is a type of chemical reaction in which two or more reactants combine to produce a single product.
In this reaction, methane is a hydrocarbon react with the oxygen to give carbon dioxide and water as a product. So, this reaction is a combustion reaction.
Combustion reaction : A type of chemical reaction where a hydrocarbon molecule react with the oxygen to produces carbon dioxide and water as a product.
Hence, the Equation A represents a combination reaction, and equation B represents a combustion reaction.
Equation A represents a combination reaction, and equation B represents a combustion reaction. Hope this helps!
