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For the reduction of a metallic oxide, s...

For the reduction of a metallic oxide, suggest a reducing agent cheaper than aluminium.

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MODERN PUBLICATION-METALS AND NON-METALS-EXERCISE
  1. Fill ups The minerals from which metals are produced economically are ...

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  2. Fill ups The process involvd in the production of a metal from the ore...

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  3. For the reduction of a metallic oxide, suggest a reducing agent cheape...

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  4. Which of the following ores are concentrated by froth floation ?

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  5. Give the name of one metal each occuring as: carbonate.

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  6. Give the name of one metal each occuring as: oxide?

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  7. Give the name of one metal each occuring as: sulphide?

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  8. Give the name of one metal each occuring as: halide.

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  9. Name two metals which are found in nature the free state.

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  10. The rockey material found with ores is known as…………….

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  11. Conversion of sulphide ore into an oxide by heating in excess of air i...

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  12. Froth floatation process is used for the concentration of ……………..ores.

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  13. Cinnabar is an ore of

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  14. Name the substance oxidised, reduced, oxidising agent, reducing agent ...

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  15. Name two metals which are not corroded easily

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  16. What is rusting? What is the chemical formula of rust?

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  17. Percentage of gold in 18 carat gold is:

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  18. Name two conditions necessary for rusting of iron.

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  19. What is the composition of bronze metal alloy?

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  20. Which is the common metal in brass and bronze?

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