State reasons for the following:
Some Silver is added to pure gold for making ornaments.
How many carats is pure gold? why is pure gold not suitable for making ornaments?
Assertion:- An alloy of gold with copper or silver is used to make ornaments.
Reason:- Pure gold is soft due to which it cannot be not used to make ornaments.
(i) .Why does a little addition of carbon in iron make it more useful ?
(i).Why silver is added to pure gold for making ornaments ?