Hello! Rushikesh Mhetre.

Well, to get admission into engineering college one needs to give entrance examination(eg. JEE mains, JEE advanced, WBJEE, BITSAT,VITEEE, APEAMCET ,KCET and many state level engineering college entrance).Yes some entrance exams consider 10+2 level marks as a criteria(eg.one must have 50% marks in PCM )

Hope this helps!