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Distinguish between pure substance and i...

Distinguish between pure substance and impure substance.

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MBD-SEPRATION OF SUBSTANCES-EXAMPLE
  1. What is a mixture ?Write two properties of mixture.

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  2. You are given a mixture of common salt and chalk powder .How will you ...

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  3. Distinguish between pure substance and impure substance.

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  4. How is common salt obtained from sea-water?

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  5. How will you separate pure water from sea water?

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  6. Describe the method of obtaining pure salt from impure salt.

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  7. What is filtration ?Write a few activities where this method is being ...

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  8. What are different methods of separating mixtures ?Explain any two of ...

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  9. Separation of mango and guava can be done by-

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  10. Winnowing method is used to separate light particles from ...............

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  11. The process of separating husk from grains is-

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  12. Wind is used to separate components in this method.

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  13. The object used to separate husk and dust particles from wheat flour i...

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  14. When size of particles is small ,then process used is-

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  15. Filtration is done by .......

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  16. The process of separating two immiscible liquids is ............

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  17. The solution salt in water in which no more salt can be dissolved is c...

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  18. Evaporation is used to separate-

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  19. The process of changiing water vapours into water droplets is called-

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  20. The constituent present in sea water is -

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