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How to prepare calcium oixde (CaO)?...

How to prepare calcium oixde (CaO)?

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Calcium oxide (Quick lime) is prepared by heating lime stone `(CaCO_(3))` in a rotary kilin at 1170. `CaCO_(3) overset(1170 K)(hArr) CaO+ CO_(2)` The reaction is reversible. Hence, `CO_(2)` is removed gaster to favour forward and completer reaction.
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SUBHASH PUBLICATION-S-Block Elements-Two marks questions and answers
  1. What is used for drying alcohol and non-acidic gases and why?

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  2. what are the biological importance of sodium and potassium.

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  3. How to prepare calcium oixde (CaO)?

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  4. What are the properties of calcium oxide?

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  5. Which metals is present in chlorophyll? How does this metals react wit...

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  6. Name an alkali metal carbonate which is thermally ustable and why? Giv...

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  7. Why are ionic hydrides of only alkali metals and alkaline earth metals...

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  8. Which one of the alkaline earth metals carbonate is thermally most and...

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  9. Which out of LI, Na, K, Be, Mg, Ca has lowest ionization enthalpy and ...

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  10. Which alkali metal ion forms largest hydrate ion in aqueous solution a...

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  11. What is responsible for the blue colour of the solution of alkali meta...

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  12. Heat of Hydration of Na^(+) (size 102 Pm) = - 397J Kj mol^(-1) whereas...

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  13. Discuss the diagonal relationship of Be and AI with regard to (i) acti...

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  14. How to prepare calcium carbonate (Lime stone) from slaked lime ?

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  15. Explain the biological importance of magnesium and calcium.

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  16. Lithium is kept wraped in parafin wax not stored in kerosene oil. Why?

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  17. When lithium is heated in air mainly forms the monoxide and not peroxi...

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  18. What is the colour imparts when calcium, Barium and strontium undergoe...

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  19. What is the formula of gypsum? What happens when it is heated?

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  20. Beryllium and magnesium do not impart colour to bunsen flame. Why?

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