Which class NCERT is best for UPSC?
You will get many questions in the IAS/IPS Exam directly or indirectly from NCERT textbooks. If aspirants have enough time, it is always advised to start from standard 6 NCERT texts and read till standard 12 texts for all relevant subjects.
Which subject is best for IAS in Class 6?
You can choose any subject first and then, start from class 6 to 12 for that particular subject book. However, according to the weightage and simplicity of the syllabus, it is best to start with Indian Polity NCERT books for UPSC.
Can I skip NCERT?
No , You should not skip the whole NCERT book of Physics, Chemistry and Maths for JEE Mains as they are the basic books which help you clear your concept in a very easy way plus they contain hundreds of questions for your practice and sometimes you will find NCERTs question in JEE Mains .