We buy iodized salt from the market. But, how to confirm that there is iodine in salt! We are going to tell a simple home test for this.

Put the starch from washing solution in the salt. If the color turns blue, then there is iodine present in salt otherwise not.
It is important to have iodine in salt in our diet because iodine is essential for the synthesis of a hormone called Thyroxin. Thyroxin is a very important hormone. This hormone plays a very important role in human metabolism.
Apart from this, for development of body and brain iodine is very important.