B.Sc

Indira Gandhi Open University (IGNOU) is the best option for pursuing B.Sc. Course through distance mode. The course fee is very reasonable about Rs 12500/, The B.Sc. Course have the flexibility in completion and can be completed up to maximum 6 years of duration. There is no minimum and maximum age bar for admission. There are several regional centers and study centers in Maharashtra can be helpful in pursuing the B.Sc. Distance course. The eligibility criteria of B.Sc. Is given below. Eligibility : 10+2 in Science or equivalent
For more details please visit http://www.ignou.ac.in/ignou/aboutignou/school/sos/programmes/detail/166/2.

Hello Durga, yes definitely you can join M.Sc. You have done your graduation in Science in petrochemicals and hence as a result you are eligible to seek admission for post graduation in a similar subject. You can further check this by downloading the brochure of the college or the institution where you are intending to do your was graduation. Best wishes to you.