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Write the order thermal stability of the...

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

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Thermal stability of hydrides. decreases, down the group. i.e.,`H_2OgtH_2SgtH_2SegtH_2TegtH_2PO`
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A N EXCEL PUBLICATION-P-BLOCK ELEMENTS-QUESTION BANK
  1. What happens when H3PO3 is heated?

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  2. List the important sources of sulphur

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

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

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

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  6. Complete the following reactions? C2H4+O2rarr

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

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

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

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

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

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  12. How is the presence of SO2 detected?

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

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

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

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

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

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

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

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  20. Name two poisonous gases that can be prepared from chlorine gas

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