Why is meso-tartaric acid regarded achiral in nature ?

Meso-tartaric acid is formed in :

Order of acidic nature

Meso-tartaric acid and d-tartaric acid are

(+-) -Tartaric acid is formed in :

Tartaric acid [HO_(2)CCH(OH)CH(OH)CO_(2)H] was an important compound in history of stereochemistry. Two naturally occuring forms of 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. Optically inactive form Q is

Why is acetic acid more acidic than ethanol?

Why is boric acid considered as a weak acid ?

Why line spectra is regarded as the fingerprints of atoms ?

Why line spectra is regarded as the fingerprints of atoms ?

Alkanes are inert is nature, why ?