Birla Institute of Technology, BIT Jaipur

BITS Jaipur and Galgotia University Noida both are good colleges but BITS Jaipur is slightly better than Galgotia in terms of placements and salary package offered. You can also compare colleges and read reviews through below link.
https://www.shiksha.com/compare-colleges
https://www.shiksha.com/mba/resources/college-reviews

Yes, you will get CSE branch in BIT, Jaipur. The average package for CSE is around Rs 7-8 lakhs per annum. Companies like Samsung, Samsung R&D, Cybage, EXL services, Musigma, Amdocs etc recruit CSE students.

Your rank will secure you a good branch in both colleges. What BIT Jaipur lacks for in terms of infrastructure, it makes up for with it's faculty and placement record. LNMIIT has a vast infrastructure and facilities. Again, this is a debatable topic and it wouldn't do any harm if you discuss the quality of education there with some current undergrad. In the end, it all comes down to what and how you are taught.

The current average will be released by July and will be available on the college website. It is deemed to be around Rs 4.5 - Rs 5 lakhs per annum for the year 2016-17.

The average package secured in 2016 was of about INR 4.5 LPA. While the highest package went for about INR 10 LPA, at SAP Labs. Please note that this applies to only the Jaipur Campus of BIT Mesra.

BIT, Jaipur is a campus of Birla Institute of Technology, Noida but MIT Pune is its main campus. Also, BIT Jaipur is new. So I will suggest you to join MIT, Pune.

ECE from BIT, Jaipur a much better option compared to CSE from DIT, Dehradun because of various reasons.
The placement in ECE is good enough. The lab facilities are good enough which is very much useful.
The most important point is that the degree which would be given to graduate will be of BIT, Mesra not of BIT, Jaipur as Jaipur is an extension center of BIT, Mesra.
BIT, Mesra is one of the most renowned universities of India.

I think you should take CS in BIT Jaipur. In my opinion, it is the best option as you will get a degree of BIT, Mesra which is of very much importance as well as the placement at BIT, Jaipur are good.

For which institute are you asking?

Admission is based on your JEE AIR. Forms will be out soon. Keep a check on BIT Mesra -https://www.bitmesra.ac.in
All the information regarding admission will be updated on the given website. There you may find a separate application form for the admission to BIT,Mesra extension centers i.e. Jaipur, Patna and Deoghar. There you may fill your choices with the application fee.
Follow the link for more details
https://bitmesra.ac.in/Show_Admission_Page?cid=1&deptid=11&pid=27