Question

Give reason: (a) Platinum, gold and silver are used to make jewellery.

Answer 1

Gold ,silver & diamonds are used in jeweler because Metals like gold, silver, platinum etc. Have lustre ,and these are less reactive, these metals cannot react with air water and acids and these metals are malleable and ductile. Due to these properties these metals are called noble metals and they are used in jewelers.
Diamond is an allotrope of carbon. It is very hard and have high refractive index. Hence it is used in jewelers.

Answer 2

Answer :

Platinum, gold and silver are used to make jewellery because these metals have shiny surfaces. They are highly malleable and ductile. They have high resistance to corrosion.