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What is corrosion? What are the differen...

What is corrosion? What are the different ways to reduce corrosion?

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The rusting of iron can be prevented by painting, oiling, greasing, galvanising, chrome plating, anodising or making alloys.
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SWAN PUBLICATION-METALS AND NON METALS-ADDITIONAL IMPORTANT QUESTIONS ( Short Answer Type Questions )
  1. Name various steps involved in the extraction of a metal from its ore?

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  2. What is alkali? Give examples.

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  3. Show by means of equations that zinc is more reactive then copper.

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  4. What is corrosion? What are the different ways to reduce corrosion?

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  5. Give reaction of Aluminium oxide with acid and base.

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  6. Which of the following gas is released when a metal react with acids?

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  7. Give the formulae of compound formed from the following sets of elemen...

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  8. What is a thermite reaction?

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  9. Fill in the blanks- The organisms which feed on dead plants and animal...

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  10. Draw electron dot structure of magnesium and potassium.

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  11. Show formation of K(2)O and MgO by transfer of electrons.

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  12. Name the ions present in compounds Na(2)O and MgO and symbolise them.

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  13. Explain in brief- Forests maintain the oxygen-carbon dioxide balance.

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  14. Write down the names of compounds represented by the following formula...

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  15. Write down the names of compounds represented by the following formula...

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  16. Write down the names of compounds represented by the following formula...

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  17. Write down the names of compounds represented by the following formula...

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  18. Mention any four products forests provide us?

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  19. Write down the names of compounds represented by the following formula...

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  20. The main components of photosynthesis are-

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