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State reasons for the following: Sulph...

State reasons for the following:
Sulphide ore of a metal is first converted to its oxide to extract the metal from it.

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It is because it is easier to reduce oxide ore as compared to sulphide ore.
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State three reasons for the following facts: a. Sulphur is a non metal. b. Magnesium is a metal.

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Give examples and suggest reasons for the following features of the transition metal chemistry. (i) The lowest oxide of transition metal is basic, the highest is amphoteric / acidic. (ii) A transition metal exhibits highest oxidation state in oxides and fluorides. (iii) The highest oxidation state is exhibited in oxoanions of a metal.

Why should the metal sulphides and carbonated ores be converted to metal oxides in the process of extraction of the metal from them?

CPC CAMBRIDGE PUBLICATION-METALS AND NON-METALS-ADDITIONAL QUESTIONS ( Answer the following)
  1. a. Write electron dot diagram for chlorine (At No. 17) and Calcium (At...

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  2. Identify the nature of above compound and explain three physical prope...

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  3. Give reasons for the following : (i) School bells are made up of met...

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  4. Give reasons for the following : (i) School bells are made up of met...

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  5. What asre amphoteric oxides? Choose the amphoteric oxide from among th...

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  6. Differentiate between roasting and calcination. Explain the two with...

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  7. Name two metals than can be used to reduce metal oxides of metals.

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  8. State reasons for the following: Electric wires are covered with rub...

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  9. Which of the following metals cannot liberate hydrogen from dilute ...

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  10. State reasons for the following: Sulphide ore of a metal is first co...

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  11. Write any four physical properties of metals.

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  12. Give examples of the least reactive metals.

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  13. Sodium and chlorine are poisonous substances but sodium chloride is ed...

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  14. Write balanced equations for the reactions of : (i) Aluminium when h...

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  15. Write balanced chemical equation for the reaction of: a. Al when hea...

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  16. Write balanced equations for the reactions of : (i) Aluminium when h...

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  17. (i) Explain the formation of ionic compound CaO with electron dot stru...

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  18. Name the constitutent metals of bronze.

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  19. a. Give two methods to prevent the rusting of iron b. Name the ores ...

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  20. You are provided with magnesium ribbon and sulphur powder. Explain wit...

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