Dheeraj M.

Judicial review is one of the most important Power given to the Supreme court.

It is necessary to uphold the principle of Supremacy of the constitution. The provision of judicial review prevents the misuse of power by the legislative and executive. It maintains the equilibrium between the centre and state, thereby maintaing federal equilibrium.

The Constitution of India delineates three lists: (i) Union List, (ii) State List, and (iii) Concurrent List based on the Government of India Act of 1935. Parliament has the exclusive power to legislate on the matters enumerated in the Union List which contains 97 items. The State Legislatures have the exclusive power to legislate with respect to matters enumerated in the State List which contains 66 subjects. The Concurrent List after 42nd Amendment contains 52 subjects. The Parliament as well as State Legislatures may legislate over them but in case of conflict, the Central law prevails over the state law. The Residuary powers are given to the Union Parliament.

For systematic strategy look at the Syllabus of UPSC CSE exams notification and read and mugup the syllabus along with it! Start reading a good quality Newspaper

The Hindu or Indian Express is recommended! 

Apart from that buy or download previous years questions from UPSC.Gov website and try to understand what type of questions they are asking! 

Now you are ready to start your Preparation in systematic way!

State PCS exams have age limit Between 35-40 years for the students of general category! Its a very reputed exams
Also, there is a job of management trainee and director at various PSUs where the eligibility is MBA graduate!
You can also opt for UPSC, but age limit in UPSC is 32 years for students of general category!