Some non-metals like phosphorus are kept in water to protect them from atmospheric oxygen. State the property of the non-metals utilized here.

22 Name some metalloids 23 Aluminium metal is nowadays widely used for making household utensil and electric wires. What is your inference of aluminium as a metal? 25 Why should foodstuffs with acid component not be stored in metallic containers? 26 A substance was burnt in air. The white residue obtained was added to water. This water solution turned red litmus into blue. State whether the substance is a metal or a non-metal?