Hello,
These are the following exams :
National Eligibility cum Entrance Test (NEET)
Exam Date:
05 May, 2019
All India Institute of Medical Sciences MBBS Entrance Exam (AIIMS MBBS)
Application Process:
25 Jan, 2019
Jawaharlal Institute of Postgraduate Medical Education & Research MBBS Entrance Exam (JIPMER MBBS)
Application Process:
06 Mar, 2019 - 12 Apr, 2019
National Eligibility cum Entrance Test for MDS (NEET MDS)
All India Institute of Medical Sciences Nursing (AIIMS Nursing)
Application Process:
29 Mar, 2019 - 05 Apr, 2019
Rajasthan Pre Veterinary Test (RPVT)
Application Process:
15 Mar, 2019 - 15 Apr, 2019 (Tentative)
Indian Army BSc Nursing
Declaration of Result:
15 Mar, 2019 (Tentative)
I hope this helps.

Hi Sunita khatake , if you are strictly following physical chemistry and biology stream , you can only apply for the science courses and not anything pertaining to engineering. You will be having entrance exams like NEET UG , JIPMER UG , AIIMS UG  entrance exams for medicine and you can also apply for other science courses through the respective universities. Good luck