If I get above 95% in 12 board pcm which collages I can get into for chemical engineering
for that you have to give engineering entrance exam then you get reputed college like iit,nit, iiit etc.
In order to get top colleges for engineering you should appear for JEE (Main+Advanced) to apply in top colleges like IITs/NITs/IIITs and GFTIs.
In order to be eligible you should have 75% marks in your boards exam or you should be in top 20 percentile. For SC/ST it is 65% marks.
You can also apply in DTU and NSIT through JEE Main in order to be eligible. Counselling will be through JAC Delhi.
You should also appear for your state leval entrance exam.
You can also appear in top private entrance exam to get admission in top private colleges like BITSAT, VITEEE, SRM, Manipal and Amrita.
You should always try to get admission in top colleges of engineering to get good placements. There is lot of competition envolved to get top colleges so, make sure you prepare accordingly
* JEE Main 2018 Application form is out if you want you can apply through below link
https://jeemain.nic.in/jeemainapp/Registration/Instruction.aspx
Good luck!!