Civil Servant (IAS/PCS)

There is nothing like DCP job but you can go for civil services exams.

Hello Ram,
To become superintendent of police, you will have to first join the police department as an assistant superintendent of police or assistant commissioner of police by qualifying the civil service exam, conducted by union public service commission.
With experience and accomplishment, you will rise to the rank of superintendent of police, SSP, deputy inspector general of police, inspector general of police, additional director general of police and finally the director general of police, who is the head of the police force in a state.

Hi,
Yes, you can join police force after completing diploma.

Hi,
You may refer to following article for tips on cracking civil service examination to become an IRS officer:
https://www.shiksha.com/articles/study-tips-for-upsc-civil-services-exam-blogId-5953

You are advised to BA Economics. It will help you in clearing civil services examination and will help in your career as civil servant.

Hi,
You can choose any of the program according to your stream in class 12th:
1. Political science.
2. Economics honors.
3. BA LLB.
4. History honors.
5. Psychology.
6. Sociology.
7. Philosophy.
8. B.Tech.
9. Mathematics, physics and chemistry honors.
All the best.

First of all, I would like to say that as you are aspiring for IAS which is a very tough competitive exam and the people getting selected are very few so go for any course in graduation which will act as a backup for your career. You can go for BBA or law or engineering. I will prefer to go for BBA because it's an easy course so you will get time to prepare for IAS exam and if you are not selected then you can pursue MBA which will give you a good career.

Rather than government colleges, you must ask for universities because not many colleges provide mass communication.
IAS/ Civil services are a good option for humanities, and that too for leading social sciences. Mass communication student will has one positive point over others in IAS that, he will have good knowledge of current affairs.

Dear,
If you want to start preparations for IAS from the 1st-year than you can think of these options:
Political Science
History
Sociology
Philosophy
But you can think of these programmes in regular mode as your plan-B for your career if you are not able to clear IAS:
BA LLB
Psychology
Journalism
Special education
English (Hons.)
So choose the right way for your future.
All the best!