Name two non-metals which are used in fireworks (crackers, etc.)

Which non-metal is used in water purification process to make drinking water supply germ-free?

Name the non-metal used to make purple coloured solution which is applied on cuts and wounds as an antiseptic.

Which non-metals is used as a fuel?

State whether the following statements are true or false?

(a) All metals exist in solid form at room temperature.

(b) Coal can be drawn into wires.

(c) Non-metals react with dilute acids to produce hydrogen gas.

(d) Sodium is a very reactive metal.

(e) Copper displaces zinc from zinc sulphate solution.

(f) Rust formed on iron objects is basic in nature.

(g) Non-metals react with water to form a gas which burns with a ‘pop’ sound.