Which non-metals is used as a fuel?

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

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

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.

Fill in the following blanks with suitable words:

(a) Metals are……………. conductors of heat and……………...

(b) Most non-metals are……………. conductors of heat and electricity.

(c) Phosphorous is a very……………. Non-metal.

(d) Metals react with acids to produce………... gas.

(e) Iron is more…………. than copper.

(f) Metals form……...oxides whereas non-metals form………oxide.

(g) Sulphur forms………oxide whereas magnesium forms…………...oxide.

(h) A non-metal is used to make an antiseptic solution called tincture…………...