Mostly the syllabus for both the entrance exam for physics and chemistry is same but it can differ also.

To check the syllabus of both the exams you can refer to below links

For NEET

http://www.medicine.careers360.com/articles/neet-syllabus

For Engineering

http://www.engineering.careers360.com/articles/jee-main-syllabus

For medical and engineering entrances, NCERT is compulsory to study as the syllabus depends on that only. And the physics, chemistry syllabus is the same for both.

Hope this helps!!!
Good Luck!!!