The melting point of NaCi is very high 801°,it is reduced to 600°C, it is by in Down's process
Correct answer: A. Calcium chloride
- A. Calcium chloride
- B. Sodium chloride
- C. Potassium chloride
- D. Magnesium chloride
Explanation
This is the correct answer. In the Down's process, a small amount of calcium chloride (CaCl2) is added to molten sodium chloride (NaCl) to lower its melting point from 801°C to around 600°C. This reduction in melting point makes it easier to electrolyze the molten salt to produce sodium metal.
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About s-Block and p-Block Elements
The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.
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