Question

What is the unit to measure the purity of gold?
Plastic containers are good for storing food give reason​

Answer 1

Carat

Karat, also spelled Carat, a measure of the fineness (i.e., purity) of gold. It is spelled carat outside the United States but should not be confused with the unit used to measure the weight of gems, also called carat.

Explain why plastic containers are favoured for storing food. Answer: Plastic containers seem more convenient than metal containers. This is because of their light weight, lower price, good strength and easy handling.

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Answer 2

karat, also known as Carat, a measure of the fineness (purity) of gold.