Name the following:(i) Metal that can be cut by knife(ii) Lustrous non-metal(iii) Metal that exists in liquid state at room temperature(iv) Most malleable and ductile metal(v) Metal that is best conductor of electricity(vi) Non-metal that can exist in different forms(b) How are alloys better than metals ? Give composition of solder and amalgam.

Name the following:(i) Metal that can be cut by knife(ii) Lustrous non

1.	Name the following:(i) Metal that can be cut by knife(ii) Lustrous non-metal(iii) Metal that exists in liquid state at room temperature(iv) Most malleable and ductile metal(v) Metal that is best conductor of electricity(vi) Non-metal that can exist in different forms(b) How are alloys better than metals ? Give composition of solder and amalgam.
Answer» Solution : (i) Sodium (Na) (II) Iodine (`I_2`) (III) Mercury (Hg) (iv) Gold (Au) (v) Silver (Ag) (vi) Carbon (C) (b) We can get DESIRED PROPERTIES from a metal by alloying it with another metal or non-metal. For example, iron is very soft. But if it is mixed with about 0.05% carbon, it becomes hard and strong. Solder : Lead and tin. Amalgam : Metal and mercury.