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Which substance liberates hydrogen when ...

Which substance liberates hydrogen when reacts with metals?

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VGS PUBLICATION-BRILLIANT-METALS AND NON-METALS-EXERCISE
  1. Predict the reason behind gold and platinum jewellery does not become ...

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  2. Which ga makes a pop sound if exposed to lighted matchstick?

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  3. Which substance liberates hydrogen when reacts with metals?

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  4. In a chemical reaction iron is unable to displace zinc from zinc sulph...

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  5. Why do silver jewellery, tarnish black after sometime ?

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  6. It is recommended that our old jewellery should not be polished by gol...

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  7. Which metals are used in making jewellery?Why?

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  8. Taking the example of magnesium and sulphur explain how metals and non...

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  9. Why do some metals replace the other metals from solution ?

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  10. What happens when : Dilute sulphuric acid is poured on a copper plate ...

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  11. What will happen when iron nails dipped in copper sulphate solution?

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  12. Why are bells made up of metals instead of wood?

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  13. Give two uses of aluminium .

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  14. Write any two differences between electric conductors and insulators.

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  15. Write any four uses of metals in different situations.

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  16. Prepare a table of various metals and non-metals used in our daily lif...

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  17. Why are aluminium foils used to wrap food items ?

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  18. Give reasons for the following : Immersion rods for heating liquids ar...

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  19. Copper cannot displace zinc from its salt solution. Give reason.

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  20. Sodium and potassium are stored in kerosene. Why?

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