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Illustrate how copper metal can give dif...

Illustrate how copper metal can give different products on reaction with 'HNO3'

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beginarray/l 3 Cu+8 HNO_3dil rarr 3 CuNO_jmath_2+2 NO+4 H_2 O Cu+4 HNO_3Conc . rarr CuNO_3_2+2 NO_2+2 H_2 O endarray
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V PUBLICATION-The p-BLOCK ELEMENTS-QUESTION BANK
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  2. How is ammonia manufactured industrially?

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  3. Illustrate how copper metal can give different products on reaction wi...

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  4. Give the resonating structures of NO2 and N2 O5

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  5. The HNH angle value is higher than HPH, HAsH and HSbH angles. Why?

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  6. Why does R3P=0 exist but R3N=0 does not. [R = alkyl group]?

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  7. Explain why 'NH3', is basic. while 'BiH3 is only feebly basic.

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  8. Nitrogen exists as diatomic molecule and phosphorus as 'P4'. Why?

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  9. Write main differences between the properties of white phosphorus and ...

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  10. Why does nitrogen show catenation properties less than phosphourus?

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  11. Give the-disproportionation reaction of 'H3 PO3'

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  12. Can 'PCl5', act as oxidising as well as a reducing agent? Justify.

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  13. Justify the placement of '0, S', Se, Te and 'Po' in the same group of ...

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  14. Why is dioxygen a gas, but sulphur a solid?

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  15. Knowing the electron gain enthalpy values for O rarr O^- and O rarr O^...

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  16. Which aerosols deplete ozone?

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  17. Describe the manufacture of 'H2 SO4' by contact process.

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  18. How is SO2 an air pollutant?

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  19. Why are halogens strong oxidizing agents?

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  20. Explain why fluorine forms only one oxoacid HOF?

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