Question

What is the purity of pure gold in carat?

Answer 1

Carat is the measurement of the ratio of gold to other metals. Gold is a dense, yellow precious metal. Yellow colour gold is most popular but today gold is available in many other colours as well by the process of alloying.

Complete answer:
The purity of gold is measured in terms of Carat. A high carat gold indicates the high purity gold.
$24$ Carat gold is pure gold with no other metal. Lower carat gold contains gold alloyed with other metals. $24$ carat gold contains $100\%$ pure gold and does not have any other metal alloyed. It is more expensive than lower carat gold. $24$carat gold is soft due to which it is not used to make jewellery.
The $22$ carat gold comprises gold alloyed with other metals like silver, zinc, nickel and other alloys. It is mostly used in Jewellery.
$18$ carat gold comprises $75\%$ gold mixed with $25\%$ of other metals such as copper, silver. It is less expensive as compared to higher carat gold.
The process of mixing other metals with gold gives malleable gold more durability. It also causes a change in its colour. The mixing of copper results in a rose pink complexion of rose gold.
Gold has been admired for its natural beauty and radiance.
Thus, $24$ carat gold is the purest form of gold. It has a bright yellow colour and it is used to make gold bars, coins etc.

Note:
We have seen that purity of gold is measured in carat where $24$ carat gold is the purest( not mixed with other metals) and most expensive form of gold. Many cultures have imagined gold to represent the sun.