DAV College, Chandigarh

You have to give PU-CET or DAV. Also, give forms for merit list in June or July. Stay tuned with DAV Colleges website or with me, I will tell you.
Last year, admission was centralized. So, I think, this year will be also and the cut-off for B.Sc is between 70 and 80 but it changes every year.
Best of luck.

No, it is important to clear all the backs in last year and you got back in last year. So, according to UGC criteria, you are not eligible for P.G. for this year.
Sorry.
Best of luck for your future.

Yes, you can get admission through Dean which has been changed currently.
Now, Dean of the college is Dr. Raman Soni. And if seats are left or vacant open admission on the basis of merit also happens.
So, best of luck.

Yes, various universities across India offer honours degree in geography. including many colleges of Delhi University itself. if you score well enough to get in, you definitely should. Other than Delhi University, other universities like BHU and Allahabad University are also excellent alternatives for geography (Hons).

Yes, you can apply in BCA. You can apply to businesses involved in IT and ITES segments both in the private and public sector. With your BCA certification, you'll also be eligible to apply jobs to companies and organizations engaged in other commercial segments including but not limited to banking, energy, telecommunications and engineering.
The salary for BCA freshers by company:
HCL - Rs.240,000 - 280,000
TCS - Rs.267,000 - 320,000
Cognizant - Rs.265,000 - 300,000
Aricent - Rs.290,000 - 315,000
Microsoft - Rs.300,000 - 360,000
Wipro - Rs.275,000 - 325,000

Yes, few top colleges in India offer bachelor hons degree in Sociology. Pick one as per your convenience.

A State or National level sports certificate is required.