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Fill in the blanks :The black substance ...

Fill in the blanks :The black substance left when Conc. `H_2SO_4` is added to cane sugar is …………….

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What happens when Con. H_2SO_4 is added to CaF_2 ?

Fill in the blanks :The dehydration property of conc. H_2SO_4 is due to the formation of ……….. With water.

What happens when conc. H_2SO_4 is added to formic acid? Give equation.

Tin reacts with conc. H_2SO_4 to give:

Fill in the blanks :Hydrogen sulphide reduces hot conc. H_2SO_4 to …………….

What happens when Nal is heated with conc. H_2SO_4 ?

SHARAM PUBLICATION-GROUP 16 ELEMENTS (OXYGEN FAMILY)-EXERCISE
  1. Fill in the blanks :Hydrogen sulphide reduces hot conc. H2SO4 to ……………...

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  2. Tailing of mercury is due to formation of .

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  3. Fill in the blanks :The black substance left when Conc. H2SO4 is added...

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  4. Fill in the blanks :Sulphur acts as ………….. In vulcanization of rubber.

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  5. Fill in the blanks :H2S gas is dried by passing through …………….

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  6. Fill in the blanks :………… gas is formed when iron sulphide reacts with ...

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  7. Fill in the blanks : ……………. Is evolved when non- metals are heated wit...

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  8. The most stable allotropic form of sulphur is:

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  9. Fill in the blanks :The dehydration property of conc.H2SO4 is due to t...

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  10. Fill in the blanks :Ozone is absorbed by …………

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  11. Fill in the blanks :Ozone oxides iodine to …………

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  12. Fill in the blanks :The maximum covalency of sulphur is ………..

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  13. Fill in the blanks :When a lead acetate paper is shown to H2S gas it t...

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  14. The thermal stability of the hydrides of group 16 ......... down the g...

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  15. Fill in the blanks :SO2 gas is purified by passing it over ………….

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  16. Fill in the blanks :The formula of hypo is ………..

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  17. Fill in the blanks :The number of unpaired electrons present in the su...

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  18. Fill in the blanks :…………. Gas is librated when ozone reacts with Kl so...

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  19. Which acid is formed when sulphur dioxide dissolves in water ? Write i...

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  20. Fill in the blanks :Between H2O and H2S , the bp of ………. Is more due t...

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