Which among the following is used in the breathing equipment for mountaineers?
- A$Na_2O_2$
- B$KO_2$
- C$CaO$
- D$Li_2O$
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Metal-ammonia solutions of group $1$ and group $2$ metals differ in
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$Na + NH_{3(l)} \longrightarrow$ Coloured solution $\xrightarrow{\text{on standing}} X + Y$
The reactivity of the alkali metal $Na$ with water is made use of in which of the following processes?
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