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What happens when copper turnings are he...

What happens when copper turnings are heated with conc. `H_2SO_4` ?

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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
  1. Why is H2SO4 called as king of the chemicals?

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  2. Tailing of mercury is due to formation of .

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  3. What happens when copper turnings are heated with conc. H2SO4 ?

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  4. Explain why SO2 is more powerful reducing agent in alkaline medium tha...

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  5. In contact process SO3 is not directly dissolved in water, explain why...

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  6. How does hydrofluoric acid react with sand ?

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  7. What happens when Zinc metal is treated with dilute H2SO4 ?

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  8. Explain that bleaching action of CL2 is permanent, while that of SO2 i...

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  9. Explain that bleaching action of CL2 is permanent, while that of SO2 i...

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  10. What happens when SO2gas is passed through lime water first slowly and...

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  11. How does Ozone react with KI solution ?

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  12. Write the shapes and type of hybridisation of the following molecules ...

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  13. How does ozone react with SnCl2

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  14. How does Ozone react with KI solution ?

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  15. What is the action of ozone on hydrogen peroxide ?

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  16. What happens when XeF6 is heated with water ?

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  17. Write all the noble gases. Why don't they enter into chemical combinat...

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  18. Give two reactions of fluorine, one with metal and other with nonmetal...

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  19. How can you prepare xenon hexafluoride ?

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  20. How does ozone react with moist iodine?

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