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Some reduced iron filings and powdered r...

Some reduced iron filings and powdered roll sulphur are well mixed and heated in a test tube. Describe all what you observe.

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MBD-IS MATTER AROUND US PURE-Example
  1. Give three reasons why air is considered a mixture and not a compound.

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  2. Define crystallisation. Give its importance.

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  3. Some reduced iron filings and powdered roll sulphur are well mixed and...

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  4. What are exothermic and endothermic reactions ?

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  5. What is the importance of evaporation ?

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  6. What are the applications of centrifugation ?

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  7. How will you separate a mixture of Iodine and sand ?

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  8. How will you separate a mixture of Ammonium chloride and common salt ?

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  9. How will you separate a mixture of Carbon disulphide and water

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  10. How will you separate a mixture of Chloroform and water ?

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  11. A solution contains 40 g of NaCl in 320g of water. Calculate its conce...

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  12. Name the separation technique to separate: Insoluble solid in solvent.

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  13. Name the separation technique to separate: Solution of solid in liquid

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  14. Name the separation technique to separate: Miscible mixture of liquids...

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  15. Name the separation technique to separate: Immiscible mixture of liqu...

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  16. Name the separation technique to separate:Mixture of two solids, one o...

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  17. What is fractional distillation ? Give its importance.

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  18. A solution of acetone in water contains 5 ml is 50 ml of its aqueous s...

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  19. Define distillation and give its importance.

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  20. How are elements classified ?

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