Question

If 'x' reacts with dil. HCl and liberates H, gas but 'y' shows no reaction with dil. HCI, what can be 'x' and 'y' respectively?
1.Magnesium; Calcium
2.Aluminium; Copper
3.Copper; Platinum
4.Potassium: Zinc
choose correct​

Answer 1

Answer:

aluminium ;copper

Explanation:

aluminum reacts with dilute HCL whereas copper is below Hydrogen and cannot displace Hydrogen