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The product of the Reimer-Tiemann reaction is amixture of `o-`hydroxybenzaldehyde (major product) and `p-hydroxy-benzaldehyde (minor product). The constituents of the mixture are best separated by
A. crystallization
B. distillation
C. Steam distillation
D. sublimation

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Correct Answer - C
On account of intramolecular hydrogen bonding, o-hydroxybenzaldehyde is sparingly soluble in water and possesses low vapor pressure. Being steam volatile, it can be separated effectively from its isomer by steam distillation.

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