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प्रश्न
Explain why alkali and alkaline earth metals cannot be obtained by chemical reduction methods?
उत्तर
In the process of chemical reduction, oxides of metals are reduced using a stronger reducing agent. Alkali metals and alkaline earth metals are among the strongest reducing agents and the reducing agents that are stronger than them are not available. Therefore, they cannot be obtained by chemical reduction of their oxides.
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संबंधित प्रश्न
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(ii) High negative standard electrode potential.
(iii) High density.
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| List-I | List-II |
| (Metal) | (Application) |
| (a) Cs | (I) High temperature thermometer |
| (b) Ga | (II) Water repellent sprays |
| (c) B | (III) Photoelectric cells |
| (d) Si | (IV) Bullet proof vest |
Choose the most appropriate answer from the options given below:
The metal mainly used in devising photoelectric cells is ______.
The correct order of hydration enthapies of alkali metal ions is ______.
Nitrogen combines with metals to form ______.
The correct order of conductivity of ions in water is ______.
