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We use soaps and detergents for washing clothes. But in olden days people were using washing soda for that purpose. Can washing soda be used to clean clothes in all types of water. Justify your answer.

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V PUBLICATION-THE s- BLOCK ELEMENTS-QUESTION BANK
  1. A student is doing an experiment in the laboratory using sodium. Sudde...

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  2. Alkali metais can react with water to form hydroxides which are alkali...

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  3. We use soaps and detergents for washing clothes. But in olden days peo...

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  4. You are given conc. HCl and salts of some alkaline earth metals and di...

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  5. By passing chlorine gas through a colourless solụtion, we get bleachin...

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  6. A magnesium compound which is used as purgative in medicine, is conver...

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

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

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

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

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

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

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

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  14. Sodium metal is kept under kerosene. Explain?

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

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  16. BeCl2' can be easily hydrolysid. Explain?

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

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

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

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

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