Will you please tell me the required percentage in 10th for admission in science stream?????

You need to have minim 70% percentage in 10th for admission in science stream, the science stream further have to branches which are as following:

Medical
Non-medical(Engineering)

After completing 12th with Medical you can apply for following courses

(Bachelor of Unani Medicine and Surgery (BUMS)
B.M.R.Sc (Bachelor of Medical Record Science)
B.Sc (Nursing)
B.Sc Optometry
B.Sc. (Hons.) Medical Technology
B.Sc. (Hons.) Opthalmic Techniques
B.Sc. (Medical Laboratory Technology)
B.Sc. - Occupational Therapy
B.Sc. - Physiotherapy
Bachelor of Dental Surgery (BDS)
Bachelor of Pharmacy
Bachelor of Audiology & Speech Language Pathology (BASLP)
Bachelor of Physical Therapy
Bachelor of Physiotherapy
Bachelor of Science (Nursing)
Basic B.Sc. Nursing
BSc (Cardiac Perfusion Technology)
BSc (Health Information Administration)
BSc (Medical Imaging Technology)
BSc Nuclear Medicine Technology (Integrated BSc NMT)
Diploma in Clinical Research
M.B.B.S.

With Non-medical (Engineering) you are eligible for following courses

Aircraft Maintenance Engineering
B.E ( Manufacturing Processes and Automation Engineering)
B.E (Aeronautical Engineering)
B.E (Applied Marine Information Technology and Communitcation)
B.E (Bio-Medical Engineering)
B.E (Chemical Engineering)
B.E (Mechanical Engineering)
B.E (Petroleum and off-shore Engineering)
B.E. (Computer Science & Engineering)
B.E. (Marine Engineering)
B.E.(Hons) Manufacturing
B.E (Electronics and Communication Engineering)
B.E.(Hons) Mechanical
B.Tech ( Aero Space Engineering)
B.Tech ( Metallurgical and Materials Engineering)
B.Tech (Automobile Engineering)
B.Tech (Bio-technology)
B.Tech (Bioinformatics)
B.Tech (Dairy Technology)
B.Tech (Electrical & Electronics Engineering)
B.Tech (Information Technology Engineering)
B.Tech (Electronics & Telecommunications) & MBA (Telecom) Dual Degree
B.Tech (Mining Engineering)
B.Tech (Paint Tech.)
B.Tech (Instrumentation & Control Engineering)
B.Tech. Textile Technology
B.Tech.(H) in Manufacturing Science and Engineering
B.Tech.- Aerospace Engg.+M.Tech.-Avionics (Dual Degree)
BTech (Applied Mechanics)
BTech (Biological Sciences and Bio-Engineering)
BTech (Civil Engineering)
BTech ( Materials Science)
BTech (Paper Technology)
BTech (Physics)
BTech (Production Engineering)
Diploma in Advanced Computer Arts