Which of the following reagent cannot be...

Which of the following reagent cannot be used to oxidize primary alcohols to aldehydes ?

Pyridinium chloro chromate

`KMnO_(4)` in acidic medium

`CrO_(3)` in anhydrous medium

Heating in presence of Cu at 573 K

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Which of the following methods cannot be used to prepare propane?

Reaction of isopropylmagnesium bromide with water

Reaction of n-propylmagnesium bromide with methanol

Reduction of Propene with `LiAlH_4`

Reduction of Propyne with `H_2`/Raney Ni

`NaCl`

`SOCl_2`

`PCl_5`

`HCl + ZnCl_2`

`H_(2)O`

NaOH

`NaHCO_(3)`

HCl