Answer:
Single Displacement Reaction
Step-by-step explanation:
Chemical reactions are broadly classified as:
1) Synthesis which involves combination of 2 or more reactants to form a single product
2) Decomposition which involves the breakdown of a complex reactant into two or more simpler products
3) Single displacement reaction which involves displacement of a more reactive element from a less reactive element in a compound
4) Double displacement involves exchange of ions between 2 salts
The given reaction is:
Mg + H2SO4 → MgSO4 + H2
Here Mg is more reactive and displaces H from H2SO4 forming MgSO4. This is an example of a single displacement reaction