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List the important sources of sulphur...

List the important sources of sulphur

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Sulphur occurs both in the free and combined states. Its important minerals are gypsum `(CaSO_4. 2H_2O)` galena (PbS),zinc blende (ZnS) and copper pyrites `(CuFeS_2)`.
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A N EXCEL PUBLICATION-P-BLOCK ELEMENTS-QUESTION BANK
  1. What is the basicity of H3PO4?

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  2. What happens when H3PO3 is heated?

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  3. List the important sources of sulphur

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  4. Write the order thermal stability of the hydrides of group-16 elements

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  5. H2S is a gas at ordinary condition, while H2O is liquid. Account for t...

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  6. Which of the following does not react with O2 directly Zn, Ti,Pt, Fe?

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  7. Complete the following reactions? C2H4+O2rarr

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  8. Complete the following reactions? '4Al+3O2

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  9. Why does ozone act as a powerful oxidising agent?

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  10. Suggests method for the quantitative estimation of ozone (O3).

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  11. What happens when SO2 is passed through an aqueous solution of Fe (III...

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  12. Comment on the nature of two S-O bonds in SO2 molecule. Are the two S:...

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  13. How is the presence of SO2 detected?

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  14. Mention three areas in which H2SO4plays an important role.

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  15. Write the conditions to maximise the yield of H2SO4 in contact process...

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  16. Why is Ka2 less than Ka1 for H2SO4 in water.?

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  17. Considering the parameters such as bond dissociation enthalpy, electro...

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  18. Give two examples to show the anomalous behaviour of fluorine.

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  19. Sea is the greatest source of halogens. Comment.

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  20. Give the reason for the bleaching property of chlorine.

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