CA

To become a CA after class 12th first, you have to take an entrance exam that is CPT and you have to clear it and go to the inter that is IPCC and that is approx after 1 year of CPT and you have to clear the first group of IPCC to become eligible for 3-year articleship and after that final.
It's approx 4.5 years process provided you clear every exam in the first attempt.
Best of luck.

Hi Padma,
You have to complete your Bachelor's degree before enrolling into the CA programme. You may enroll into BA or B.Com or B.Sc depending on your class 12th stream.

Go for B.Com and along with that go for CA.

CA can be done by both science and commerce stream students.

Register with ICAI for CPT.

Most of the students pursuing CA do it with their B.Com as most of the topic you study in B.Com is already covered in CA that's too in much deeper sense. Relatively the examinations and course for B.Com is much easier compared to CA exam and you do not need to go for full time college for CA in fact no such options available yes you need to do 3 years articleship which will be quite tiring that's why everyone cannot be a CA only those who are committed and hardworking can do it.