Class 12 Chemistry Chapter 12 Aldehydes Ketones and Carboxylic Acids Class 12 Chemistry Solutions NCERT Solutions Class 12 Chemistry Chapter 12 Aldehydes Ketones and Carboxylic Acids NCERT Solutions for Class 12 Chemistry. Chapter 12 Aldehydes Ketones and Carboxylic Acids. PDF download free. NCERT Solutions for Class 12 Educational Study Material