Following stereo-structure of tartaric acid represents:

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d or I form

racemic form

meso form

trans form

answer is C.

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Detailed Solution

The compounds with the plane of symmetry are called meso compounds. The chiral compound also shows meso form.

Tartaric acid is a natural substance that sometimes crystallizes out from the wine.

The stereo structure shows meso form.

Tartaric acid and its enantiomers lack plane symmetry.

Thus, the molecule is chiral.

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The tartaric acid stereo structure shows meso form. Meso compound exhibits a plane of symmetry. Meso tartaric acid is diastereomer. The molecule can be rotated 180 degrees around the axis and then superimposed. This is called $C_{2}$ symmetry. It is also a chiral compound so it is called meso compound.

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Option:-(c) is the final answer

Stereo structure of tartaric acid shows meso form.

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