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In the Down's method for the extraction ...

In the Down's method for the extraction of sodium, the melting point of the electrolyte is lowered by adding:-

A

Potassium chloride

B

Calcium chloride

C

Potassium fluoride

D

Both calcium chloride and potassium fluoride

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The correct Answer is:
D
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ALLEN-S-BLOCK ELEMENTS -EXERCISE
  1. Which cannot be used to generate H(2)?

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  2. Only those elements of s-block can produce superoxides which have:-

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  3. In the Down's method for the extraction of sodium, the melting point o...

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  4. Which of the following carbonate will not decompose on heating:-

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  5. The decomposition temperature is maximum for:-

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  6. Metallic magnesium is prepared by-

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  7. Alum is the name used for all double salts having the composition M(2)...

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  8. Which valuable byproduct is obtained in the Down's process for extract...

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  9. Which does not exists in solid state

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  10. Alkali metals dissolve in liquid NH(3) then which of the following obs...

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  11. On passing excess of CO(2) in lime water, its milky appearance disappe...

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  12. Which of the carbide will give methane when reacts with water-

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  13. Alkali metals give colour in bunsen flame due to-

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  14. In the preparation of sodium carbonate which of the following is used-

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  15. Hardest s-block metal is-

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  16. An ingredient of banking powder is-

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  17. Which of the following metals can easily be cut with a knife?

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  18. Which of the following ions forms a hydoxide that is highly soluble in...

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  19. The sodium carbonate is manufactured by-

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  20. When NaCI is dissolved in water, the sodium ion is-

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