Hi
For subjects like history old ncert is better but for subjects like geography, polity etc new NCERT is better as many things have changed now and new NCERT has updated information
Top books for your UPSC examination are listed below subject wise:-
HISTORY
NCERT XI (Ancient & Medieval) NCERT XII (Modern Indian History) Facets of Indian Culture Spectrum From Plassey to Partition - A History of Modern India
Indian Art & Culture
Indian Art & Culture - Nitin Singhania
Polity
NCERT IX-XII Indian Polity M Laxmikanth
Geography
NCERT VI X (Old Syllabus) NCERT XI, XII (New Syllabus) Certificate Physical Geography G C Leong World Atlas
Economics
NCERT XI The Indian Economy Sanjiv Verma Indian Economy by Ramesh Singh Economic Development & Policies in India Jain & Ohri
Environment
Class XII Biology (last 5 chapters) Environment by Shankar IAS Academy Environment & Ecology: Biodiversity, Climate Change and Disaster Management - General Studies for Civil Services (Main) Examination - Paper II and IV - Majid Hussain
International Relations
NCERT XII (Contemporary World Politics) Current Affairs ( read newspaper as well)
To get the complete list ofgof books go through https://competition.careers360.com/articles/books-for-upsc-ias
Thankyou
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