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Metals are said to be shiny. Why do meta...

Metals are said to be shiny. Why do metals generally appear to be dull ? How can their brightness be restored ?

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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. State any five physical properties of metals and five physical propert...

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  2. (a). Name two physical properties each of sodium and carbon in which t...

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  3. Metals are said to be shiny. Why do metals generally appear to be dull...

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  4. (a). What are metals? Name five metals. (b). Name a metal which is s...

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  5. (a). Define non-metals. Give five examples of non-metals. (b). Name ...

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  6. (a). What is meant by the reactivity series of metals ? Arrange the fo...

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  7. The elements whose oxides can turn phenolphthalein solution pink are:

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  8. "Is malleable and ductile " best describes:

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  9. One of the following is not a neutral oxide. This is :

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  10. A basic oxide will formed by the element :

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  11. An acidic oxide iis produced by the element:

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  12. You are given a solution of AgNO(3) which of the following do you thin...

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  13. Out of aluminium, copper, calcium and tin, the most reactive metal is:

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  14. The least reactive metal among the following is :

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  15. An element X reacts with hydrogen, when heated, to form a covalent hyd...

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  16. Out of the following oxides, the amphoteric oxide is:

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  17. The metals which can produce amphoteric oxides are :

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  18. An element X forms two oxides XO and XO(2). The oxide XO is neutral bu...

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  19. The element whose oxides can turn litmus solution blue are :

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  20. The elements whose oxides can turn litmus solution red are:

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