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Write one chemical equation to show that...

Write one chemical equation to show that `SO_2` acts as a reducing agent.

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`SO_2` reduces `KMnO_4` to `MnSO_4`
`2KMnO_4 + 2H_2O + 5SO_2 rarr K_2SO_4 + 2MnSO_4 + 2H_2SO_4`
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KALYANI PUBLICATION-P-BLOCK ELEMENTS-EXERCISE (PART-II)(DESCRIPTIVE QUESTIONS)(VERY SHORT ANSWER QUESTIONS)
  1. What is produced when SO2 is dissolved in water?

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  2. Name one substance which can be used as a catalyst in the formation of...

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  3. Write one chemical equation to show that SO2 acts as a reducing agent...

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  4. What happens when SO2 reacts with CI2 : (i) in presence of sunlight....

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  5. SO2 acts as a bleaching agent. How?

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  6. Why dry SO2 does not bleach dry flowers ?

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  7. Why does SO2 exhibit bleaching action only in presence of water?

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  8. What happens when H2S reacts with SO2 ?

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  9. What happens when SO2 is passed through caustic soda solution ?

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  10. What is the bond angle in SO2 ?

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  11. State the name of anhydride of H2SO4.

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  12. Why sulfuric acid is described as king of chemicals ?

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  13. Why sulfuric acid is also known as oil of vitriol?

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  14. Why the process of manufacture of H2SO4 is named contact process ?

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  15. In the manufacture of sulfuric acid by the contact process, why great ...

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  16. In the contact process, vanadium pentoxide is considered a better cata...

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  17. Why in the contact process, heating of catalyst is stopped, the moment...

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  18. Why SO3 formed by the oxidation of SO2 , is not directly dissolved in ...

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  19. Sulfuric acid having concentration greater than 98.5% H2SO4 cannot be...

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  20. Why conc. H2SO4 is stored in air tight bottles ?

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