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Which of the following does not react wi...

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

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Pt is a noble metal and does not react very easily. All other elements, Zn, Ti, Fe, are quite reactive. Hence, oxygen does not react with platinum (Pt) directly.
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NCERT-THE P-BLOCK ELEMENTS-EXERCISE
  1. Write the order of thermal stability of the hydrides of group 16 eleme...

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  2. Why is H(2)O a liquid and H(2)S a gas?

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  3. Which of the following does not react with oxygen directly? Zn,Ti,Pt,F...

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  4. Complete the following reactions: (i) C(2) H(4) + O(2) to (ii)...

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  5. Why does O3 act as a powerful oxidising agent?

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  6. How is O(3) estimated quantitatively ?

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  7. What happens when sulphur dioxide is passed through an aqueous solutio...

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  8. Comment on the nature of two S–O bonds formed in SO(2) molecule. Are t...

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  9. How is the presence of SO2 detected?

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  10. Mention three areas in which H2SO4 plays an important role.

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  11. Write the conditions to maximise the yield of H2SO4 by contact process...

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  12. Why is K(a(2)) ltlt K(a(1)) for H(2) SO(4) in water ?

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

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  14. Give two examples to show the anomalous behavious of fluorine.

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  15. Sea is the greatest source of some halogens. Comment.

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  16. Give the reason for bleaching action of Cl2.

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  17. Name two poisonous gases which can be prepared from chlorine gas.

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  18. Why is ICI more reactive than I2?

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  19. Why is helium used in diving apparatus?

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  20. Balance the following equation: XeF6+H2OtoXeO2F2+HF

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