The reactions that are single displacement reactions are
2SnO₂ +2 H₂ → Sn +2H₂O
2Al +6HCl → 2AlCl₃ +3H₂
Explanation
Single displacement is type of chemical reaction where element reacts with compound and take the place of another element in that compound
In the first reaction, H₂ displaces O₂ from SnO₂ to form Sn and H₂O
In second reaction Al element displaces H from HCl to form AlCl₃ and H₂
