One should know properties of constituents of a mixture to separate the mixture .Why?​

Because: The mixtures contain unwanted substances which may be harmful and may degrade the properties of mixtures. So we, need to separated them and extract useful substances.

Sea water is rich in commonplace salt which is an essential factor of our food to add flavor and vitamins. However sea water, cannot be immediately used to get the salt. Consequently, it's far important to split each.

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i hope this !