hello sreehari B ,

for engineering three subjects are compulsory in 12th ie. physics , maths , chemsitry for any branch you choose .

for career in medical you have to choose physics , chemistry , biology as compulsory subjects .

 

Hello Dear

There is not any specifications requires for taking the Chemical engineering branch in your engineering curriculum / degree. You can be able to take the branch based upon the marks / rank you scored in the JEE mains or in the respective entrance exam . So based upon that your scored marks in the PCM category you will be able to take the preferred branch in the private / Government Institution.

All the best

For chemical engineering you do not need any specific subjects just focus on the subjects of class 12 that is physics chemistry and maths also develop a logical approach to solve any  problem don't try to mug up anything .Engineering requires aptitude .