First, use water to dissolve the salt, then filter to separate the sawdust. Next, remove the salt solution through evaporation, leaving salt crystals. Finally, remove the potatoes by hand from the remaining mixture.
A mixture containing potatoes, salt and sawdust has been given to you. Outline a stepwise procedure for separating each component from this mixture.
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To separate a mixture of potatoes, salt, and sawdust, first add water to dissolve the salt. Filter the mixture to separate the sawdust from the liquid. Next, evaporate the water from the salt solution to obtain salt crystals. Finally, manually remove the potatoes from the remaining mixture. This process ensures that each component—salt, sawdust, and potatoes—is effectively separated based on their physical and chemical properties.
For more CBSE Class 6 Science Curiosity Chapter 9 Methods of Separation in Everyday Life Extra Questions & Answer:
https://www.tiwariacademy.com/ncert-solutions-class-6-science-curiosity-chapter-9/
To separate potatoes, salt, and sawdust from a mixture, first manually remove the potatoes by handpicking, then add water to dissolve the salt, filter out the sawdust, and finally evaporate the water to obtain the salt crystals; essentially using handpicking, filtration, and evaporation techniques.
Step-by-step procedure:
1. Handpicking:
Carefully pick out the potatoes from the mixture using your hands as they are the largest and easiest to separate manually.
2. Add water:
To the remaining mixture of salt and sawdust, add water.
3. Filtration:
Pour the mixture into a filter paper lined funnel.
The sawdust will be trapped on the filter paper while the salt solution passes through.
Collect the filtered saltwater in a separate container.
4. Evaporation:
Heat the saltwater solution in an open container.
As the water evaporates, the salt crystals will be left behind.
Once all the water has evaporated, you will be left with pure salt crystals.
Key points:
Handpicking is suitable for separating large, easily identifiable objects like potatoes .
Filtration separates insoluble solids (like sawdust) from a liquid by passing the mixture through a filter paper .
Evaporation separates a soluble solid (like salt) from a liquid by heating the solution until the liquid evaporates .