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Among rhombic, monoclinic and plastic fo...

Among rhombic, monoclinic and plastic forms of sulphur, which form has highest heat of combustion. Why?

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1) M.P. of Rhombic sulphur is higher than that of monoclinic sulphur 2) Specific gravity of Rhombic sulphur is lower then that of Rhombic sulphur. Then incorrect statement(s) are

AAKASH SERIES-GROUP 16 ELEMENTS-EXERCISE - 2.2
  1. Write on the valency, bonding and catenation of sulphur.

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  2. Oxygen is divalent in its compounds, but sulphur is even hexavalent. W...

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  3. Among rhombic, monoclinic and plastic forms of sulphur, which form has...

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  4. Liquid oxygen stick to magnetic poles but not liquid nitrogen. Why?

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  5. Comment on the sability of hydrogen sulphide and polysulphides.

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  6. Write on the trends of bond energy, bond angle, volatility and boiling...

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  7. Write the preparation of hydrogen sulphide. How is it used in qualitat...

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  8. Tetrafluorides of sulphur are not prepared directly from elements. Why...

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  9. How are fluorides of oxygen prepared ? Write their structures.

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  10. Discuss the bonding and structures of SF(6), SCl(4), SCl(2) and S(2)Cl...

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  11. Nitric acid can not be used to prepare hydrogen sulphide. Why?

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  12. The bond angle in water molecule is nearer to tetrahedral angle, but i...

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  13. Discuss the structures of sulphite and sulphate ions.

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  14. What is ozonolysis? Write equation for the ozonolysis of ethylene. Dra...

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  15. Ozone acts as oxidising agent as well as reducing agent. Substantiate.

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  16. Hydrogen sulphide can not be dried over conc. H(2)SO(4) Why?

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  17. How many sulphur atoms in H(2)S(n)O(6) has sulphur linked to only its ...

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  18. Turbidity is obtained when hydrogen sulphide is passed through aqueous...

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  19. Compared to water, hydrogen sulphide is thermally less stable, stronge...

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  20. Supar turns black on adding with sulphuric acid. Why?

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