NCERT Books are the most suggested books for build up basics in preparation of Civil Services Examination. NCERT books are simple & authentic.
The language in ncert is simplified for better understanding & are an authentic source of information provided by government institutions.
They are standard books for exams & questions in the ncert book are also reliable.
These books cover topics in a sequence and flow of the topics is coherence.
They start with the basics and end with higher level, unlike many other books. So, you are looking to clear your concepts ncert is the best way to go.
