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(a) Why does Al díssolve both in acidic ...

(a) Why does Al díssolve both in acidic and basic solutions?

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V PUBLICATION-THE s- BLOCK ELEMENTS-QUESTION BANK
  1. A magnesium compound which is used as purgative in medicine, is conver...

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  2. There are two compounds of sodium whose formulae are (anhydrous form) ...

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  3. (a) Why does Al díssolve both in acidic and basic solutions?

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  4. Complete the following (i) 'Li+N2 gives

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  5. (a) What happens when alkali metals dissolved in ammonia? (b) Complet...

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  6. (a) Name the chief factor responsible for the anomalous behaviour of l...

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  7. Give reasons. (i )Solutions of alkali metals in liquid ammonia are blu...

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  8. Why Li2CO3 decomposes at lower temperature whereas Na2CO3 at higher te...

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  9. Sodium metal is kept under kerosene. Explain?

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  10. A piece of magnesium is burned in air. Which are the reactants here ...

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  11. BeCl2' can be easily hydrolysid. Explain?

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  12. Why does magnesium has a higher ionization enthalpy than sodium?

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  13. Why is it that 'BeSO4' and 'MgSO4' are soluble but 'BaSO4' is insolubl...

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  14. What is magnesia cement? Give 'its composition?

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  15. Beryllium exhibits some similarities with aluminium. Write three such ...

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  16. The energy released during the addition of an electron to an isolated ...

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  17. Why lithium forms only lithium oxide and not perioxide or superoxide?

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  18. Out of 'KOH' and 'NaOH', which is stronger base and why?

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  19. Potassium carbonate cannot be prepared by Solvay process. Why?

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  20. Why an aqueous solution of sodium carbonate is'alkaline?

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