How are evaporation and crystallization methods helpful to get salt from the seawater?

Important Questions on Separation of Substances

EASY

6th CBSE

IMPORTANT

Galaxy A Course in Science Book 6>Chapter 5 - Separation of Substances>Put on your thinking cap>Q 6

Something which is used to separate substances is given below. Label it and write the method of separation under the diagram.

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EASY

6th CBSE

IMPORTANT

Galaxy A Course in Science Book 6>Chapter 5 - Separation of Substances>Put on your thinking cap>Q 6

Something which is used to separate substances is given below. Label it and write the method of separation under the diagram.

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HARD

6th CBSE

IMPORTANT

Galaxy A Course in Science Book 6>Chapter 5 - Separation of Substances>Extended learning>Q 1

Take some muddy water of equal quantity in two beakers—A and B. Filter both of them separately. To the beaker A, add a few crystals of alum and leave the beaker B as it is. Leave the beaker undisturbed for some time. Do you notice any difference in the two beakers? If yes, what is the process that took place? Where is this method applied on a commercial scale?

MEDIUM

6th CBSE

IMPORTANT

Galaxy A Course in Science Book 6>Chapter 5 - Separation of Substances>Extended learning>Q 2

Give an example of a solid solution.

HARD

6th CBSE

IMPORTANT

Galaxy A Course in Science Book 6>Chapter 5 - Separation of Substances>HOTS>Q 1

Yesterday you and a couple of your friends threw some solid substances, such as a few seeds(it is lighter than water), sand, salt, and iron filings into buckets filled with water. You were not aware that these substances were part of some materials that your father needed for a project at work. Now the substances are all mixed in the water. When your father found out about this he was not happy. He wants you to separate all the components. Design the procedure to recover all the substances.

HARD

6th CBSE

IMPORTANT

Galaxy A Course in Science Book 6>Chapter 5 - Separation of Substances>HOTS>Q 2

Salt and chalk are mixed together in water. How would you separate them into dry salt and dry chalk dust?

MEDIUM

6th CBSE

IMPORTANT

Galaxy A Course in Science Book 6>Chapter 5 - Separation of Substances>HOTS>Q 3

Solubility of substances helps aquatic animals and plants. How?

MEDIUM

6th CBSE