Hello Ayush

A basic knowledge of mathematics, physics and chemistry will be more than enough. These can be easily mastered if one pays 100% attention to school lectures in 11th and 12th ( Board matters least as the questions are basic) and English, a little GK , and General Aptitute which can be done easily.

The questions asked are just to test the basic understanding of PCM, General knowledge and general English.

Questions of PCM are of NCERT level and a regular schooling candidate can easily solve them.

General knowledge portion of the paper is again simple and one who reads newspaper daily can easily go through it and

General English part is just to test the aptitude of candidate in vocabulary &Grammar.