I'm in 12th can i give clat examination without clat coaching

Yes you can.I am also in 12th and preparing for CLAT with books from home.But its difficult to study for CLAT on your own.
Books I am using for my preparation:
Math: quantitive aptitude by RS aggrawal
Logical reasoning:verbal and non verbal reasoning by RS aggrawal
Legal:LA & LR BY AP Bhardwaj
English:
For grammar:wren and Martin high School English grammar
For vocabulary:word power made easy by Norman lewis
GK &CA:
For static gk:30 rupees arihants GK book
For current affairs:
Newspaper
Gk today website
Monthly magzine pratiyogita darpan
Manorama year book

Remember Understand the syllabus for CLAT and then use these book to study what is important for CLAT.No need to read full books only what's important.

Hello,.
You have to complete your graduation first in order to appear for clat entrance exam.You should choose a field in which you are interested to complete your graduation then only you can do MBA course.
Good luck.