Which reagents are suitable for following transformations?

1.	Which reagents are suitable for following transformations?
Answer» Answer :(a) & (c) (i) `BH_(3)*THF,(ii)H_(2)O_(2)//OH^(-)` (b) & (d) Dil. `H_(2)SO_(4)` or (i) Hg `(OAc)_(2),H_(2)O` (ii). `NaBH_(4)//OH^(ɵ)`.

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