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On dissolving moderate amount of sodium ...

On dissolving moderate amount of sodium metal in liquid ammonia at low temperature, which of the following does not occur ?

A

Blue coloured solution is obtained

B

`Na^(+)` ions are formed in the solution

C

Liquid `NH_(3)` becomes good conductor of electricity

D

Liquid `NH_(3)` remains diamagnetic

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Alkali metals oxide are obtained by combustion of the metals.Although Na normally gives Na_2O_2 ,it will take up further oxygen at elevated pressure and temperature to form NaO_2 .The per and superoxides of the heavier alkalies can also be prepared by passing stoichiometric amounts of oxygen into their solution in liquid ammonia. The different alkali metal oxides can be distinguished by reaction with water.The superoxides reacts with CO_2 and give oxygen gas.The stability of per and superoxides is based upon that larger cation can stablise larger anion, due to larger lattice energy. Alkali metals dissolve in liquid ammonia.Dilute solutions are dark blue in colour but as the concentration increases above 3M, the colour changes to copper bronze and the solution acquires the metallic lusture due to the formation of metal ions clusters.The solutions of alkali metals in liquid ammonia are good conductors of electricity due to the presence of ammoniated cations and ammoniated electrons.However, the conductivity decreases as the concentrations increases, since ammoniated electrons and ammoniated cation associate. On dissolving smaller (less than 3M) amount of sodium metal in liquid ammonia at low temperature , which one of the following does not occur ?

Which of the following reaction does not occur?

Which of the following reactions does not occur ?

This metal is a liquid at room temperature :

This metal is a liquid at room temperature :

This metal is a liquid at room temperature.

This non-metal is liquid at room temperature :

Which of the following displacement does not occur:

Which of the following does not dissolve in water?

Name a metal which is liquid at room temperature.

VMC MODULES ENGLISH-13-14 HYDROGEN & S-BLOCK ELEMENT-Level 1
  1. Which of the following has lowest thermal stability?

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  2. NaOH underset((solid))+CO overset(200^(@)C) to X, product X is :

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  3. On dissolving moderate amount of sodium metal in liquid ammonia at low...

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  4. The solubility of alkali metal hydroxides follows the order:

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  5. The magnetic moment of KO(2) at room temperature is ---------- BM.

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  6. The sequence of ionic mobility in aqueous solution is

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  7. Ease with which hydrides are formed form Li to Cs:

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  8. Thermal stability of hydrides of first group elements follows the orde...

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  9. When a mixture of Li(2)CO(3) and Na(2)CO(3). 10H(2)O is heated strongl...

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  10. When sodium is dropped in smal amount of water it catches fire. Whih o...

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  11. Which of the following is thermally stable :

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  12. Which of the following is a radioactive element :

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  13. The alkaline earth metal that forms mainly covalent compounds is :

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  14. The correct order of polarising ability of cations al Alkaline earth m...

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  15. Ionic nature of groupIIA hydrides is :

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  16. Chlorophyll, the green component of plants contains :

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  17. CaC(2) on reaction with H(2)O from:

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  18. Calcium is obtained by the

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  19. Pick out the wrong statement :

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  20. Magnesium burns in air giving two products. Their formulae are :

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