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is an allotrope of oxygen: It is formed ...

_____________ is an allotrope of oxygen: It is formed at upper atmosphere by action of UV lighten oxygen.

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BODY BOOKS PUBLICATION-THE P-BLOCK ELEMENT-Example
  1. Is used in filling weather balloons.

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  2. Observe the relationship between the first two terms and fill In the b...

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  3. is an allotrope of oxygen: It is formed at upper atmosphere by action ...

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  4. Choose correctly matched pairs.

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  5. “H3PO2 is a tribaslc acid”. State whether this statement Is true or fa...

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  6. PH3 is reacts with HI to form a salt .

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

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  8. Which aerosols deplete ozone?

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  9. Which one of the following does not exist? i 'XeOF4' iiNeF2 iii XeF iv...

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  10. Ammonia has a higher boiling point and Is less volatile because of.

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  11. Compound is used as the covering liquid in refrigerators ?

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  12. The most abundant oxidation states of nitrogen are.

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  13. Name a disinfectant produced using slakedlime and chlorine. Give its c...

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  14. Name two allotropes of sulphur.

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  15. Sketch the structure of XeF4 Indicating lone pairs of electrons, if an...

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

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  17. Arrange the following hydrogen halides in the Increasing order of thei...

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  18. Explain why inspite of nearly the same electronegativity, oxygen forms...

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  19. All halogens except fluorine exhibits +1,+3, +5 and +7 oxidation state...

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  20. Element A burns, in nitrogen to give an ionic compound B. The compound...

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