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Name the chemical substance which is use...

Name the chemical substance which is used as a flux in the extraction of metals.

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BHARATI BHAWAN (ENGLISH)-COMPOUNDS OF COMMON USE-Short Answer Questions
  1. How is washing soda different from sodium bicarbonate ?

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  2. How is sodium carbonate converted into sodium bicarbonate ?

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  3. Name the chemical substance which is used as a flux in the extraction ...

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  4. Are the crystalline salts really dry ? Give your answer with reasons .

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  5. A white compound of sodium is used to remove hardness of water and asl...

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  6. Explain why baking soda is used as an antacid .

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  7. Name the compound of calcium which gets hardened when treated with wat...

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  8. Write the chemical formula of gypsum. How is it converted into plaster...

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  9. Why is plaster of paris stored in a moistureproof vessel ?

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  10. What is the difference between slaked lime and lime water ?

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  11. Why is sodium chloride required in our body?

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  12. What happens when a sample of sodium hydrogen carbonate is heated ? Wr...

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  13. What happnes when bleaching powder is heated with dilute H(2)SO(4) ? ...

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  14. How many molecules of water of crystallization are present in the foll...

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  15. (a). What is bleaching powder? How is bleaching powder prepared? Write...

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  16. Describe an activity to show that blue copper sulphate contain water o...

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  17. Why is the formula of plaster of paris written as CaSO(4) .1/2 H(2)O ...

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  18. Give the important properties of baking soda.

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  19. Give two important uses of washing soda and baking soda each.

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  20. Describe the manufacture of bleaching powder why does its effectivness...

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