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A small piece of calcium metal is put in...

A small piece of calcium metal is put into a small trough containing water. There is effervescence and white turbidity is formed.
What do you observe when a few drops of red litmus solution are added to the turbid solution ?

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The solution tuns blue as it is a basic solution (alkaline) of calcium hydroxide.
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ICSE-STUDY OF THE FIRST ELEMENT - HYDROGEN-TOPIC 1 Hydrogen and its Laboratory Preparation (3 MARK QUESTIONS)
  1. Hydrogen can be prepared with the metal zinc by using : acid Giv...

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  2. Hydrogen can be prepared with the metal zinc by using : alkali G...

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  3. Hydrogen can be prepared with the metal zinc by using : water Gi...

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  4. Hydrogen is prepared by Bosch process ? Write the balanced equations...

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  5. Hydrogen is manufactured by Bosch Process'. How can you obtain hydr...

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  6. A small piece of calcium metal is put into a small trough containing w...

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  7. A small piece of calcium metal is put into a small trough containing w...

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  8. A small piece of calcium metal is put into a small trough containing w...

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  9. Give balanced equations to show the preparation of hydrogen by the fol...

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  10. Which metal is preferred for preparing hydrogen from: hot water ? ...

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  11. Give balanced equations to show the preparation of hydrogen by the fol...

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  12. Name two alkalies that can displace hydrogen. Give balanced equations ...

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  13. (i)Name the industrial method for the production of hydrogen gas. (...

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  14. Write the balanced chemical equation for the production of water gas.

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  15. Write a balanced chemical equation Action of hot water on heated mag...

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  16. Write balanced chemical equation for each of the Action of dilute h...

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  17. Write a balanced chemical equation Action of sodium hydroxide soluti...

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  18. Balance the equations : P+O2 to P2O5

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  19. Balance the equations : C2H4 + O2 to CO2 + H2O

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  20. Balance the equations : P2O5+H2O to H3PO4

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