Which of the following techniques is most suitable for purification of cyclohexanone from a mixture containing benzoic acid , isoamyl alcohol , cyclohexane and cyclohexanone ?

Options

A. Crystallisation
B. IR spectroscopy
C. Sublimation
D. Evaporation

Answer

B

Explanation

IR spectroscopy is used for the purification of cyclohexanone from a mixture of benzoic acid , isoamyl alcohol , cyclohexane and cyclohexanone because in IR spectroscopy each functional group appears at a certain peak . IR spectroscopy exploits the fact that molecules absorb specific frequencies that are characteristic of their structure .