20 carat of gold is a mixture of 20 parts by weight of gold and 4 parts by weight of copper.Pure gold is 25 carat.

Asked by avdeshsharma981 | 2nd Aug, 2019, 01:54: PM

Expert Answer:

Gold which is 100 percent pure is called 24 carat gold. Pure gold is soft.
As a result the ornaments made from pure gold bend or break due to pressure.
 
Hence gold-smith add specific amount of copper or silver in pure gold. To prepare ornaments 22 carat gold is used.
 

Carat (gold)        

            Percentage(gold)


24

100

22

91.66

18

75.00

14

58.33

12

50.00

10

41.66

Answered by Ramandeep | 5th Aug, 2019, 03:20: PM