Chaitanya Bharathi Institute of Technology, Hyderabad

Hii Tinku.Hope you are doing good.It would be better if you could tell me your category and any special status if you have so that I could answer you appropriately.

SRM provides top placements, top faculty members as well as good infrastructure but the university fee is very high. If you choose economically, then DTU will be the best. DTU also provides good placements.

You can check your chances by Shiksha's college Predictor. Go for it:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=6540165.

It will be two years.

Yes MAT score is acceptable. There is no such cutoff for getting selection process call.

Hello, CBIT is not a good choice for pursuing MBA, as not only it ranks outside the top 50 B-schools across India but also is not even a decent brand name. It would be better to avoid it and aim only for the much better and reputed colleges. https://www.shiksha.com/mba/course/master-of-business-administration-chaitanya-bharathi-institute-of-technology-gandipet-hyderabad-56400
Kindly visit this link for more details about CBIT.
P.S. To be honest, I've myself heard this name for the first time.