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metal get green coating when exposed to ...

__________metal get green coating when exposed to air.

A

`1`. Silver

B

`2`. Copper

C

`3`. Gold

D

`4`. Aluminium

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VGS PUBLICATION-BRILLIANT-METALS AND NON-METALS-EXERCISE
  1. Which gas is liberated when, acids react with metals ? Give one exampl...

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  2. generally do not react with water.

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  3. metal get green coating when exposed to air.

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  4. Among which is does not react with air?

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  5. How do you prove that iron is more reactive than copper?

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  6. metal gets rust when exposed to air.

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  7. The gas which produces pop sound.

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  8. When zinc granules are added to copper sulphate is deposited at the b...

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  9. Why do silver objects and jewellery become black after some time ?

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  10. The given apparatus is required to test for sonority.

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  11. The simple test for sonority is

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  12. To test malleability of a substance, the given apparatus is required

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  13. What are the materials required to test a metal for electric conductiv...

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  14. What precautions do you take while burning sulphur ?

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  15. If you burn sulphur in your lab, it gives

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  16. Which of the following is used to test for acidity of a substance ?

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  17. If you dip blue litmus paper in sulphur dioxide Solution, it will chan...

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  18. Gas in a cylinder was put off the burning stick with a pop sound. The ...

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  19. If you add Zn in copper sulphate (CuSO4) solution,you may observe in t...

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  20. Explain the following chemical changes : An iron nail is dropped in a ...

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