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What are amphoteric substances? Illustra...

What are amphoteric substances? Illustrates with an example.

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A substance is said to be amphoteric if it can behave either as an acid or as a base. Water is the most common amphoteric substance.
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CPC CAMBRIDGE PUBLICATION-ACIDS, BASES AND SALTS-ADDITIONAL QUESTIONS (Answer the following questions :)
  1. What are amphoteric substances? Illustrates with an example.

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  2. On the basis of origin, how acids are classified?

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  3. Why vinegar is used in pickling?

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  4. Define dilution.

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  5. (a) Write the common name of CaOCl2 How it is prepared? Write the chem...

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  6. W'hat are organic acids? Give two examples.

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  7. How does a strong acid differ from a concentrated acid?

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  8. Why should curd and sour substances not be kept in brass and copper ve...

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  9. Why should acids be handled with care?

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  10. While diluting an acid, why is it recommended that the acid should be ...

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  11. 15 ml of water and 10 ml of Sulphuric acid are mixed in a beaker. (...

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  12. A white coloured powder is used by doctors for supporting fractured bo...

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  13. (i) Write the name given to bases that are highly soluble in water. Gi...

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  14. (i) Give the constituents of baking powder. (ii) Why cake or bread s...

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  15. How will you test for the gas which is liberated when hydrochloric aci...

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  16. Sodium hydrogen carbonate is a basic salt. Justify the statement how i...

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  17. Mention the colour of FeSO(4). 7H(2)O crystals . How does this colour ...

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  18. What happens when chlorine is passed over slacked lime at 313k? Write ...

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  19. What is meant by water of Crystallisation ? How do you show that coppe...

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  20. Why does 1 m HCI solution have a higher concentration of H^(+) ions th...

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