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Among which is does not react with air?...

Among which is does not react with air?

A

Gold

B

Silver

C

Copper

D

Iron.

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VGS PUBLICATION-BRILLIANT-METALS AND NON-METALS-EXERCISE
  1. generally do not react with water.

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  2. metal get green coating when exposed to air.

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  3. Among which is does not react with air?

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

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  5. metal gets rust when exposed to air.

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  6. The gas which produces pop sound.

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

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

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

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  10. The simple test for sonority is

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

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

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  13. What precautions do you take while burning sulphur ?

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

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

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

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

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

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

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  20. Early man used these metals to make his tools first

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