For purification of alumina, the modern processes most useful when (i) the impurity present is a lot of iron oxides and (ii) the impurity present is a lot of silica, are

For (i) Hall's process; for (ii) Baeyer's process

For (i) Hall's process; for (ii) Serpeck's process

For (i) Serpeck's process; for (ii) Baeyer's process

For (i) Baeyer's process; for (ii) Serpeck's process

For purification of alumina, the modern processes most useful when (i)

1.	For purification of alumina, the modern processes most useful when (i) the impurity present is a lot of iron oxides and (ii) the impurity present is a lot of silica, are
A.	For (i) Hall's process; for (ii) Baeyer's process
B.	For (i) Hall's process; for (ii) Serpeck's process
C.	For (i) Serpeck's process; for (ii) Baeyer's process
D.	For (i) Baeyer's process; for (ii) Serpeck's process
Answer» E.

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For purification of alumina, the modern processes most useful when (i) the impurity present is a lot of iron oxides and (ii) the impurity present is a lot of silica, are

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