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

Complete the following reactions? '4Al+3O_2`

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i. .C_2 H_4+3 O_2 rarr 2 CO_2~g+2 H_2 O. ii. .4 Al+3 O_2 rarr 2 Al_2 O.
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V PUBLICATION-The p-BLOCK ELEMENTS-QUESTION BANK
  1. Why is 'H2 O' a liquid and 'H2 S' a gas?

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

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

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

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

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  6. How is the presence of SO2 detected?

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

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  8. How is 'O3' estimated quantitatively?

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

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

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

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

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

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  14. Why is ICl more reactive than I2 ?

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  15. Why is helium used in diving apparatus?

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  16. Balance the following equation: 'XeF6 + H2O -> XeO2F2 +HF

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  17. Why has it been difficult to study the chemistry of radon?

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  18. Discuss the general characteristics of Group 15 elements with referenc...

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  19. Why does the reactivity of nitrogen differ from phosphorus?

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  20. Discuss the trends in chemical reactivity of group 15 elements.

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