Which of the following is ideal for Oxidation of propene to propan-1-ol

a)Alkaline KMnO4 b)B2H6/Alkaline KMnO4 c)O3/Zn dust d)CrO3

'x' gm of a compound A3B2C5 contains 'y' gm of A atoms

 

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how to represent the possible fischer projections for 2-bromohexane