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Name two metals which can be used to red...

Name two metals which can be used to reduce to metal oxides to metals.

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Metals like Al and Mg can be used to reduce certain oxides of less reactive metals to their oxides. For example,
`Cr_(2)O_(3) + 2Aloverset("heat")rarr Al_(2)O_(3) + 2Cr`
`Fe_(2)O_(3) + 3Mg overset("heat")rarr 3MgO + 2Fe`
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DINESH PUBLICATION-METALS AND NON-METALS-Very Short Answer Questions
  1. Why do we apply paint on iron articles?

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  2. Explain why calcium metal after reacting with water starts floating on...

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  3. Name two metals which can be used to reduce to metal oxides to metals.

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  4. The wires carrying current in homes have a coating of PVC. Why ?

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  5. Name the following : (a) A metal which is preserved in kerosene (...

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  6. A non-metal X exists in two different forms Y and Z. Y is hardest natu...

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  7. Name a non-metal which reacts with very dilute nitric acid to evolve h...

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  8. If copper metal is heated over a flame, it develops a coating. What is...

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  9. Why does not stainless steel get rusted easily ?

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  10. Why can we use gold and platinum in jewellery ?

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  11. Give chemical names of the two salts belonging to sodium family.

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  12. Name any one alloy made from (i) a metal and a non-metal (ii) two meta...

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  13. Why do we apply paint on iron articles?

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  14. Write the balanced chemical equation for the chemical reaction between...

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  15. Ionic solids conduct electricity in the molten state and not in the so...

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  16. In one method of rust prevention, the iron is not coated with anything...

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  17. The wires carrying current in homes have a coating of PVC. Why ?

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  18. Aluminium oxide and zinc oxide react with both acids are bases to prod...

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  19. Name the constituents elements of the alloys (i) Brass (ii) Bronze (ii...

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  20. Out of silver and copper metals, which is more reactive and why ?

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