CA

Both are professional courses and both have great value. CA is the better one in terms of marketing.

Here are some courses which a commerce student can do:
1. Bachelors of Commerce (B.Com)
2. Bachelors of Commerce (Honours) or B.Com (Hons)
3. Bachelors in Economics
4. Bachelors of Business Administration (BBA)
5. Bachelor of Management Studies (BMS)
6. Chartered Accountancy (CA)
7. Company Secretary (CS)
8. Cost and Management Accountant (CMA)
9. Institute of Actuary of India (IAI)
10. Certified Financial Planner (CFP)
11. Bachelor of Law (LLB), etc.

B.Com takes 3-year to graduate. CA takes minimum 4.5 years, CS takes 4 years and CMA also takes 4 years.

No, there is need of any approval from any institute.

You really need to work hard after MPC. Take coaching. Read books available in the market. I will personally recommend you to go through online interviews of CAs.

Yes, of course. You can see many people who have opted for CA after MPC. Just move on.

Yes, it's better to get CA after 10+2.

Hi. Any graduation can be done. Even, you can go without graduation for pursuing CA Course. Generally, Bachelors degree in Commerce is preferable.

You can do both CA as well as B.Com at same time.

its all are professional courses with b.com. CA And CS both is valuable course market has both demands. cs is comparatively easy than CA.