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Write the equation for the laboratory pr...

Write the equation for the laboratory preparation of sulphur dioxide from sodium sulphite.

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ICSE-SULPHURIC ACID-ADDITIONAL QUESTIONS FOR PRACTICE
  1. Name the following: An ore other than zinc blende which on roasting g...

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  2. Give one similarity and two differences between bleaching action of su...

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  3. Write the equation for the laboratory preparation of sulphur dioxide f...

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  4. How is sulphur dioxide gas collected ?

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  5. What does the method of collecting tell you about the density of sulph...

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  6. What do you see when sulphur dioxide is bubbled through an acidified p...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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