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Sesquoxides of alkali metals may be repr...

Sesquoxides of alkali metals may be represented by the formula :

A

`M_(2)O_(5)`

B

`M_(2)O_(3)`

C

`MO_(2)`

D

`M_(2)O_(2)`

Text Solution

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The correct Answer is:
B
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MODERN PUBLICATION-CHEMISTRY OF s-BLOCK ELEMENTS-MULTIPLE CHOICE QUESTIONS (LEVEL-II)
  1. The correct sequence of increasing covalent character is represented b...

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  2. Which one of the following is not dissolved in dilute hydrochloric aci...

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  3. Sesquoxides of alkali metals may be represented by the formula :

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  4. Among KO(2),AlO(2)^(-),BaO(2)andNO(2)^(+), unpaired electron is presen...

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  5. Which of the following oxides is most acidic in nature ?

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  6. Which of the following does not react with water even under red hot co...

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  7. The reducing power of a metal depends on various factors. Suggest the ...

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  8. Which of the metal carbonates is most stable thermally?

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  9. Which of the carbonates given below is unstable in air and is kept in ...

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  10. Which of the following metal hydroxide is the least basic ?

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  11. Among the following metal halides, the one which is soluble in ethanol...

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  12. Which of the following Group 2 metal hydroxides is soluble in sodium h...

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  13. In the synthesis of sodium carbonate, the recovery of ammonia is done ...

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  14. When sodium is dissolved in liquid ammonia, a solution of deep blue co...

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  15. Suspension of slaked lime in water is called :

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  16. Which of the following elements does not form hydride by direct heatin...

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  17. The order of decreasing ionisation enthalpy in alkali metals is

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  18. Amongst fluorides of alkali metals, the lowest solubility of LiF in wa...

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  19. By adding gypsum to cement

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  20. Dead burnt plaster is

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