As we know, revising chapters and practising improves our ranking and score. It is said earlier that "Practice makes a man perfect". But in my view, "A Perfect Practice makes a man perfect". As per class 8 civics chapters are concerned, i would like to suggest to go through different question banks and online tests. It will affect your study a lot. Also, for doubts and confused in theories, you should watch some videos on YouTube of theories.
Also read:- GIVE SOME MOTIVATIONAL IDEAS FOR PREPARING STUDENTS BEFORE COMPETITIVE EXAMS?