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Q.

The most stable conformer of butane-2, 3- diol is

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a

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b

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c

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d

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answer is C.

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Detailed Solution

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C.W means clock wise.

→ Gauche conformation is the most stable conformation of 2,3-butane diol due to hydrogen bonding.

→ In the given options 1,3,4 options are Gauche conformations but in third option the two bulky methyl groups are anti to each other and hence it is highly stable among the given options.

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