A Level COMPULSORY General Paper ???

[Suchal Riaz]

I had to take physics, math, computer, chemistry but now suddenly i found out that there is a compulsory mysterious subject named general paper which i must give.
I opened the past papers and it looked very difficult.
Tell me some details about it and how can i prepare for it.
As I live in Pakistan, please tell me about the importance(if there is any) of it in foreign and local universities.