In this series, we provide a few challenging questions per chapter, class-wise, for students to solve.
Unified Council's 
series encourages students to face challenging problems and apply the concepts learned in the focus lessons, effectively.
These questions direct students to think systematically and apply their knowledge effectively. The concept nourishes the students’ ability to face Olympiads and other competitive exams,yielding better results.
We will be adding more chapters to this series, periodically. Keep visiting, so as not to miss them.