B.Tech Computer Science and Engineering

Yes, anything is possible. You can do anything. It would be better to go for IT jobs for as I think, you are a fresher.

Hello Ashish!
The admission into Anna University is not based on any entrance exams. You can get a seat via your board exam marks itself, but it should be top notch.

If you are done with the diploma , Then you will get admission directly in 2nd year B.tech . It is mecessary to complete diploma in the same branch.
If you are fulfilling the criteria then you can get admission.

Please refer to the link provided below for details regarding admissions for B.Tech in Computer Science and Engineering at Indian Institute of Technology, Bombay. Important details like eligibility, admission process followed for this course is mentioned at this link. Regards.
https://www.shiksha.com/b-tech/course/b-tech-in-computer-science-and-engineering-indian-institute-of-technology-bombay-powai-mumbai-109575

Hello, B.Tech Computer Science is more preferred by student in comparison with mechanical engineer. As now a days, IT sector is increasing their range that is why computer engineers are more required. But, I recommend you to think about your interest instead of trend. And, if you are really interested in CSE branch, then go for it.

B.Tech is not enough. You have to do M.Tech or MCA from reputed institute. You have to write GATE.

Reasonably well. Placements were as high as 85% when market responded favorably and up to 65% when market was sluggish. good organizations like cognizant, Indian Navy, Zoho, Tech Mahindra, City Union Bank,are some of the regular recruiters