Tartaric acid [HO_(2)CCH(OH)CH(OH)CO_(2)H] was an important compound in history of stereochemistry. Two naturally occuring formsof tartaric acid are optically inactive. One optically inactive form (P) has a melting point of 210-212^(@)C and can be separated into two optically acitve forms, whereas other optically inactive form (Q) cannot be resolved further. A optically inactive form P is :

Tartaric acid [HO_(2)CCH(OH)CH(OH)CO_(2)H] was an important compound i

1.	Tartaric acid [HO_(2)CCH(OH)CH(OH)CO_(2)H] was an important compound in history of stereochemistry. Two naturally occuring formsof tartaric acid are optically inactive. One optically inactive form (P) has a melting point of 210-212^(@)C and can be separated into two optically acitve forms, whereas other optically inactive form (Q) cannot be resolved further. A optically inactive form P is :
Answer» OPTICALLY inactive due to INTERNAL compensation. Optically inactive due to presence of PLANE of symmetry. Optically inactive due to external compensation. Optically inactive due to intramoleuclarhydrogen bonding. ANSWER :C