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Why can we use gold and platinum in jewe...

Why can we use gold and platinum in jewellery ?

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Both these metals are very hard, malleable and ductile. Since they lie at the bottom of the activity series, they have very low reactivity. As a result, these metals do not lose lustre and are used in jewellery.
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DINESH PUBLICATION-METALS AND NON-METALS-Very Short Answer Questions
  1. If copper metal is heated over a flame, it develops a coating. What is...

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  2. Why does not stainless steel get rusted easily ?

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

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

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

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  6. Why do we apply paint on iron articles?

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

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

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

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

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

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

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

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  14. Why does not stainless steel get rusted easily ?

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

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

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

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  18. Why do we apply paint on iron articles?

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

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

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