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What is the composition of the alloy, el...

What is the composition of the alloy, electron?

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95 % of Mg+ 5% of Zn.
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CHHAYA PUBLICATION-s-BLOCK ELEMENTS -QUESTION-ANSWER ZONE FOR BOARD EXAMINATION (VERY SHORT ANSWER TYPE)
  1. Which Gr-2 metal burns readily when exposed to air?

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  2. Which alkaline earth metal reacts with alkali to form hydrogen gas?

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  3. What is the composition of the alloy, electron?

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  4. Which reagent is used to analyse Ca^(2+) and Mg^(2+) ions quantitative...

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  5. What is the medicinal name of the aqueous solution of Mg(OH)2 ?

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  6. What is anhydrone?

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  7. How will you distinguish between BeSO4 & BaSO4 ?

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  8. Which out of MgCO3, SrCO3 and BaCO3, possesses highest thermal stabili...

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  9. Distinguish between Be(OH)2 and Ba(OH)2.

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  10. Why is BeCl2 soluble in organic solvent ?

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  11. Which Gr -2 metal carbonate is unstable in air ?

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  12. Which alkline earth metal sulphate is useful in diagonising stomach ul...

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  13. BeO is covalent but still it has much higher melting point - mention t...

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  14. Write a reaction by which BeCl2 can be prepared.

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  15. What is the composition of sodalime used for the preparation of hydroc...

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  16. Name two acidic oxides which react similarly with calcium hydroxide [C...

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  17. Which alkaline earth metal oxide is used as a flux in metallurgy to re...

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  18. What is the commercial name of the disinfectant powder obtained when C...

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  19. Plaster of paris is

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  20. What type of impurities in gypsum should be avoided in preparing Plast...

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