The m ain so urces of rev enue of the Central Government are1. income tax 2. corporate tax3. custom duties 4. excise duties On the basis of their importance their correct sequence in ascending order is

Public finance is the study of the role of the government in the economy. It is the branch of economics that assesses the government revenue and government expenditure of the public authorities and the adjustment of one or the other to achieve desirable effects and avoid undesirable ones.