Which of the followng is true about this reaction?

Which of the followng is true about this reaction?

1. A is meso-1, 2-butanediol formed by syn addition
2. A ismeso-1, 2-butanediol formed by anti addition
3. $A$ is a racemic mixture of $d$ and $\mathbf{H}, \mathbf{2}$ -butanediol formed by anti addition.
4. A is a racemix mlxture of d and $1-1,2$ -butanedlol formed by syn addition

Solution

Alkenes give diol with alkaline $\mathrm{KMnO}_{4}$.
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Asked in: JEE-TOPICTESTS-CHEMISTRY

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