Dear aspirant hope you are doing it well. It's difficult to give you the exact list of subject in B. Sc 2nd year because subjects are different in different universities/ colleges. I will the most common subjects in B. Sc second year are..

• Physics
• Chemistry
• Calculus
• Abstract algebra
• C++
• Geometry
• Algebra..

B. Sc subjects list..

• BSc Physics
• BSc Chemistry
• BSc Computer Science
• Bachelor Of Science [B.Sc] (Biotechnology)
• Bachelor Of Science [B.Sc] (Microbiology)
• Bachelor Of Science [B.Sc] (Information Technology)
• Bachelor Of Science [B.Sc] {Hons.} (Mathematics)
• Bachelor Of Science [B.Sc] {Hons.} (Chemistry)
• Bachelor Of Science [B.Sc] {Hons.} (Physics)

Hope it's helpful thank you