Multiple choice

Which of the following mixtures is/are heterogeneous?

  1. Mixture of alcohol and water

  2. Blood

  3. Sand

  4. All of the above
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C Correct answer
Explanation

Mixture of alcohol + water and blood are homogeneous mixtures, i.e. the mixtures which have uniform composition and properties throughout. Sand is an example of a heterogeneous mixture. A heterogeneous mixture is made of different substances that remain physically separate. Heterogeneous mixtures always have more than one phase.

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