If you want to do engineering in the future you have to appear for entrance exams like JEE (Main+Advanced), BITSAT, VIT, SRM, Amrita and your state level entrance exam.

Make sure you get 75% marks in your boards exam or you should be in top 20 percentile to be eligible for IITs/NITs/IIITs and GFTIs. For SC/ST it is 65% marks.

Prepare well for your exam as there is lot of competition in engineering field to get admission in top colleges. Always prefer a college who offer good placements.

Your syllabus for engineering programs is based on 11th and 12th class only. Try to clear your base to build you fundamentals strong. Choose right study material for you. Refer previous year papers and mock test series for your practice.

All the best for your future!!