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General Principles and processes of Isolation of Elements
easy
The element which could be extracted by electrolytic reduction of its oxide dissolved in a high temperature melt is:
A
sodium
B
magnesium
C
fluorine
D
aluminium
Solution
Aluminium metal is obtained by the electrolysis of fused alumina. Here, fused cryolite and fluorspar are added with alumina and mixture melts at $900^{\circ} C$ and alumina becomes a good conductor of electricity. Metallic $Al$ is liberated at the cathode.
Standard 12
Chemistry
Similar Questions
Match List $I$ with List $II$ and select the correct answer using the codes given below the list
| List $I$ | List $II$ | ||
| $1.$ | $Ti$ | $A.$ | Bauxite |
| $2.$ | $Si$ | $B.$ | Cerussite |
| $3.$ | $Al$ | $C.$ | Van-Arkel method |
| $4.$ | $Pb$ | $D.$ | Zone refining |
easy
