Class 12 Economics Notes Chapter 1 National Income PDF Class 12 Economics Notes. Chapter 1 National Income and Related Aggregates. PDF Download Free. Class 12 Economics Notes Chapter 1 National Income and Related Aggregates PDF Download Free Chapter 1 National Income and Related Aggregates Chapter 2 Money and Banking Chapter 3 Determination of Income and Employment Chapter 4 Government Budget and the Economy Chapter 5 Balance of Payment and Foreign Exchange