Two equivalents of OsO₄ hydroxylate one equivalent of 1,5-cyclooctadiene.
How many stereoisomeric cyclooctane-1,2,5,6-tetraols will be formed?
A) 1
B) 2
C) 3
D) 4

'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