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When chlorine is involved in bleaching, ...

When chlorine is involved in bleaching, what is the type of chemical reaction that changes the coloured compound to a colourless one ?

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ICSE-SULPHURIC ACID-ADDITIONAL QUESTIONS FOR PRACTICE
  1. What do you see when sulphur dioxide is bubbled through an acidified p...

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  2. Write an equation in each case to show the action of sulphur dioxide a...

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  3. When chlorine is involved in bleaching, what is the type of chemical r...

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  4. What is the reason for not using chlorine to bleach wool?

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  5. Name the products formed when hot and concentrated sulphuric acid reac...

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  6. Give reasons for the following: Sulphuric acid form two types of sa...

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  7. Give reasons for the following: Brisk effervescence is seen when oil...

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  8. Give reasons for the following: Red brown vapours are produced when...

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  9. Give reasons for the following: A piece of wood becomes black when c...

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  10. What property of conc. H2SO4 is made use of in each of the following c...

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  11. What property of conc. H2SO4 is made use of in each of the following c...

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  12. What property of conc. H2SO4 is made use of in each of the following c...

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  13. What property of conc. H2SO4 is made use of in each of the following c...

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  14. What property of conc. H2SO4 is made use of in each of the following c...

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  15. Why is (a) concentrated sulphuric acid kept in air tight bottles ?

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  16. Why is H2SO4 not a drying agent for H2S ?

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  17. Why is sulphuric acid used in the preparation of HCI and HNO3 ? Give...

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  18. Give a chemical test to distinguish between dilute sulphuric acid an...

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  19. Give a chemical test to distinguish between dilute sulphuric acid an...

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  20. Sulphuric acid is manufactured by Contact process : Give two balance...

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