Question

ornaments are generally not made from 24- carrat gold

Answer 1

ornaments are actually most of the time made from 24 carat
in, 24 carat gold the amount of gold is 22 part and other 2 are other than gold part for making gold hard
carat means the no.of part present in the mixture

Answer 2

24 carat gold is very soft.
That's why ornaments generally made from 22 carat gold
In 24 carat gold we add some other material to increase it's strength.