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There is substance ‘X’. After burning, i...

There is substance ‘X’. After burning, it is.changed into powder. If we add water to the powder it acts as a base, then the ‘X’ may be

A

`1`. Mg (Magnesium)

B

`2`. C (Carbon)

C

`3`. O (Oxygen)

D

`4`. Au (Gold)

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The substance 'X' normally exist in a physical state which ca flow easily but does not fill its vessel completely. It also turns dry copper sulphate to blue. When substance'X. is cooled excessively, It changes into a substance'y' which has a fixed shape and fixed volume. If, the substance 'x' is heated strongly., it changes into substance'z' which has neither a fixed shape not a fixed volume. name the substances 'x', 'y' and 'z'.

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VGS PUBLICATION-BRILLIANT-METALS AND NON-METALS-EXERCISE
  1. Predict a metal, which is a metal but does not have sonority.

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  2. How can you say plastic does not have property of malleability ?

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  3. There is substance ‘X’. After burning, it is.changed into powder. If w...

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  4. What happens if we add copper dust into Ferrous sulphate solution ?

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  5. Guess the reason why does Ferrous (Iron) does not displace Zinc from Z...

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  6. Which gas is liberated when, acids react with metals ? Give one exampl...

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  7. generally do not react with water.

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  8. metal get green coating when exposed to air.

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  9. Among which is does not react with air?

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

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  11. metal gets rust when exposed to air.

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  12. The gas which produces pop sound.

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

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

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

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  16. The simple test for sonority is

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

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

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  19. What precautions do you take while burning sulphur ?

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

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