Hii!
The questions can be asked from any section of a particular chapter for democratic politics - 2 and the same stands for other subjects too. So, in order to score good marks, you should go through every thing. You can check out the previous year question papers and sample papers to get an idea on the types of questions asked. The link given below will help you with more information -

https://www.google.com/amp/s/school.careers360.com/articles/cbse-class-10-social-science-sample-papers/amp

Hope this helps.
Good luck!