Free PDF download of Class 12 Chemistry revision notes & short key-notes for Chapter 14 – Biomolecules to score high marks in exams, prepared by expert Chemistry teachers from latest edition of CBSE(NCERT) books.
Key notes for class 12 Chemistry chapter 14 Biomolecules. it includes revision notes such as Polyhydroxy aldehydes or polyhydroxyketones or compounds on hydrolysis give carbohydrates. The oxide linkage formed by the loss of a water molecule when two monosaccharides are joined together through oxygen atom is called glycosidic linkage. Sucrose is dextrorotatory but on hydrolysis it gives dextrorotatory & laevorotatory and the mixture is laevorotatory. The free aldehyde group can be produced at C1 of second glucose in solution and it shows reducing properties so it is a reducing sugar.