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Write the chemical formula of rust....

Write the chemical formula of rust.

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Rust is hydrated ferric oxide and its chemical formula is `Fe_(2)O_(3).xH_(2)O`.
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DINESH PUBLICATION-METALS AND NON-METALS-Very Short Answer Questions
  1. (a) Name the most abundant metal in the earth's crust. (b). Name the...

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  2. Giving examples differentiate between roasting and calcination.

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  3. Write the chemical formula of rust.

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  4. Name the process used for the enrichment of sulphide ore.

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  5. Out of zinc and iron, which evolves hydrogen more readily on reacting ...

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  6. How do alloys brass and bronze differ in composition ?

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  7. Does german silver contain silver in it ?

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  8. Write the chemical formulae of the main ores of iron and aluminium.

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  9. Name the non-metal which can conduct electricity.

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  10. Write the names of two neutral oxides.

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  11. Name the chemical formula of zinc blende and galena.

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  12. Write one example each of : (i) a metal having low melting point an...

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  13. Which acts as anode in the electro-refining of metals ?

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  14. Which is the name of the bond formed when a metal atom combines with t...

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  15. How will you account for the high melting points of salts ?

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  16. Name two metals which exist in the native or free state.

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  17. What reaction takes place when manganese dioxide is heated with alumin...

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  18. Can rusting of iron nail occur in distilled water ?

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  19. Which metal is the best conductor of electricity ?

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  20. Which metal is used in amalgams ?

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