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The following are some statments about o...

The following are some statments about oxides of alkali metals
i) The basis nature and solubility of these oxides increases from Li to Cs
ii) The stability of superoxide of IA group elements increases down the group due to increase in lattice energy
iii) `KO_2` is organe red coloured and paramagnetic

A

only ii is correct

B

I and iii are correct

C

ii and iii are correct

D

all are correct

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-ALKALI METALS-OBJECTIVE EXERCISE - 2
  1. In solvay process when ammonical brine is saturated with CO(2) gas the...

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  2. E^(0) values for Cl(2), Cl^(-), I(2)^(-), Ag^(+), Ag, Na^(+), Na, Li^(...

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  3. The following are some statments about oxides of alkali metals i) Th...

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  4. The number of hydroxide ions produced by one molecule of Na(2)CO(3) on...

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  5. The cathode in middle compartment of Castner-Kellner process is

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  6. 'A' and 'B' are compounds of sodium. 'A' is thermally stable. On passi...

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  7. Sodium is heated in air at 300^(0)C to form X, X absorbs CO(2) and for...

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  8. The most basic oxide amongst the following

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  9. Alkali metals are so named because

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  10. Sodium metal preserved under kerosine. This is to prevent

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  11. Wrong reaction of the following

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  12. The following some statments about IA group elements i) The redioact...

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  13. Which of the following substances of lithium is most stable ?

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  14. When a substance 'A' reacts with water it produces combustible gas B a...

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  15. Which of the following hydrogen compounds is most ionic ?

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  16. Sodium metal itself is used as

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  17. Which of the following metal pairs liberate H(2) with NaOH

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  18. The number of possible resonance forms for superoxide ion is

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  19. Which of the following pair cannot exist together in solution ?

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  20. The least soluble alkali metal carbonate is

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