Physical chemistry 27 English poetry 24 Indian Economics 20 History of south India 17 Catalysis 14 Calculus 13 India 13 Economics 12 Ionisation 11 Isotopes 11 History of South India 10 History 8 Indian economy 8 photochemistry 8 Accounting 7 Economics- Development 7 English ;Indian History 7 India-economic development and growth-- Economic planning-- Production economics 7 Macro Economics 7 Photo chemistry 7 Physical Chemistry 7 English fiction 6 Financial management 6 Foreign Exchange 6 International Trade 6 Micro Economics 6 Photochemistry 6 Public Finance 6 catalysis 6 Backward Caste-- Environment Pollution-- Demography-- Indian Politics-- India and Education 5