Am I Eligible for B.Sc Nursing after 12th (Physics, Chemistry and Biology and maths)??? What are the eligibility criteria for this course????

Yes, you are Eligible for B.Sc Nursing after 12th (Physics, Chemistry and Biology and maths), the eligibility conditions for this program are as following:

Eligibility:
The applicant should have completed 0+2 with Physics, Chemistry and Biology as subjects with minimum 60% marks from any recognized board of India.

Here I am providing you the list of top B.Sc. (Nursing) Colleges in India:

Postgraduate Institute of Medical Education & Research: Department of Nursing
B.M. Birla College of Nursing, Kolkata
Apollo College of Nursing, Chennai
Govt. college of Nursing, Kottayam
SNDT Faculty of Nursing, Mumbai
St. John's College of Nursing, Banlglore
Govt. college of Nursing, Thrissur
Govt. college of Nursing, Alappuzha
Govt. college of Nursing, Thiruvananthapuram
Hinduja Hospital, Mumbai: College of Nursing
CMC Ludiana: College of Nursing
Madras Medical Mission, College of Nursing, Chennai
Kovai Medical Center Research and Educational Trust: College of Nursing
RAK College of Nursing, Delhi
Madras Medical College, College of Nursing
Jamia Hamdard University: Faculty of Nursing
SRM University: College of nursing Chennai
CMC Vellore: College of Nursing
Govt. College of Nursing, SSKM Hospital, Kolkata
Father Muller College of Nursing, Manglore
Sreeb Ramachandra Medical University, Chennai: College of Nursing
School of Health Sciences: IGNOU
Amrita University: College of Nursing, Cochin
Manipal College of Nursing: Manipal University:
Kokilaben Dhirubhai Ambani Nursing College
MIMS College of Nursing, Calicut, Kerala
Tata Memorial Hospital, Mumbai: Nurisng
Government College of Nursing, Kozhikode
National Institute of Mental health and Neurisciences, Banglore: Department of Nursing
Department of Nursing: All India Institute of Medical Sciences