Hello aspirant! Congrats on graduating in B.Sc. To become a CA, you have to finihs three levels of a course conducted by the Institute of Chartered Accounts of India(ICAI). The exam has three levels:

• Common Proficiency Test(CPT)
• Integrated Professional Competence Course(IPCC)
• Final Course(FC)

You must first take The Common Proficiency test which has two Sections. The first section has Fundamentals of Accounting for 60 marks and Mercantile Laws for 40 marks. The Second section has General Economics for 50 marks and Quantitative Aptitude for 50 marks. You can refer the whole syllabus on the official site.

Hope this helps! All the best!