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Show that the time required for 99% comp...

Show that the time required for 99% completion of a first order reaction In twice the time required for the completion of 90%.

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  3. Show that the time required for 99% completion of a first order reacti...

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  4. A first order reaction takes 40 min for 30% completion. Calculate t(1/...

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  5. Why is dioxygen gas but sulphur a solid?

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  6. Most of the compounds of transition elements are paramagnetic in natur...

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  7. Why do transition metals have high enthalpies of atomization ?

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  8. Transition metals form mostly coloured compounds.Explain.

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  9. Transition elements and their compounds are found to be good catalysts...

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  10. Why Cr^(2+) is strongly reducing while Mn^(3+) is strongly oxidising ?

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  11. The d^1 configuration is very unstable in transition metal ions. Exp...

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  12. What happens when : n-butyl chloride is treated with alcoholic KOH.

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  13. What happens when - bromobenzene is treated with Mg in the presence ...

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  14. What happens when : Ethyl chloride is treated with (aq) KOH.

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  15. Methyl bromide is treated with sodium in the presence of dry ether.

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  16. What happens when : Methyl chloride is treated with KCN.

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  17. Explain the following reaction reaction : Sandmeyer's reaction.

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  18. Write the following reactions: Finkelstein reaction

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  19. Write down following name reaction : Hunsdiecker reaction

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  20. Give the following reactions: Fitting reaction

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