It's amazing that you're a HITK student, my brother was one too and his friend and his colleague's daughter as well. Coming back to your question, yes, you can change your stream in the first year. 

Build a CGPA of 8.5 or above to apply. You will become eligible for application. You can then easily apply for a change of stream. 

You may get disappointed when the administration tells you that the seat will be allotted on the basis of availability. The higher your score, the greater are the chances- they will hint at this as well, but don't lose hope because they will have a seat for you.

VIIT is the first preference of many students for civil engineering. NIRF and the Outlook rated this college 155th and 132nd respectively for engineering. VIIT Pune offers a B.Tech program in Civil Engineering.

Admission:

• The required eligibility for admission to BTech Civil Engineering is 10+2 and the JEE Mains score. It also accepts scores for state level exams like MHT-CET.
• The tentative cut-offs are generally 74% and 72% for Civil Engineering.
• The total course fee is 6.59 lakhs.

Faculty:

In the department, the faculty members are excellent with the majority of them having a Ph.D. degree and years of experience in teaching.

Infrastructure:

A well-organized technical lab and the departmental library is there and can be accessed by the students. A fully ventilated auditorium cum conference room is also available where guest faculty take up the workshops and conferences.

Placement:

Students here are trained for placements by mock interviews and industrial visits during their final year. The college has a placement rate of 95 percent in the civil engineering department which again makes it a better choice for this course.

• The average salary received by Civil engineers of VIIT is 4.2 lakhs with a 5:1 student to company ratio.
• Akme projects Ltd, BGR Energy system, Punj Lloyd, Afcons infrastructure limited are some of the renowned recruiters of the civil engineering department where students get placed.

Internships are also available with a stipend during vacation times. On compilation of the internships, many students get job offers.

VIIT Pune is a good option for Civil Engineering with decent placement opportunities.

There are few differences between the CSE and the IT branch in MNNIT in Allahabad. One of my friends studies at MNNIT, so I can give you the basic difference between these two branches.

1. Academically: 5th and 8th Semester subjects of CSE and IT branch are different. 
2. Learning: There is not much difference on the learning basis. Core subjects are the same in both departments. In both departments, you will learn through self-study. 
3. Placements: There is no difference in placement of CSE and IT branches. Several companies come for placement for both departments, giving you several opportunities. 

The recruiting companies are more or less the same that offer both CSE and IT. The list includes - Microsoft, Google, Accenture, Oracle, PWC, Capgemini, Byju’s, Jaro Education, Adobe, Goldman Sachs, etc.

There is only a slight difference between both departments. Both the departments of MNNIT Allahabad are almost the same on the basis of learning, placement. So, if you want to join MNNIT Allahabad CSE or IT branch then go for it.

CSE at IIIT Allahabad wins hands down when the choice is between IIIT-A and BITS Goa. Both institutes have the same coursework for CSE, but IIIT-A offers it for one-third the fee of BITS Goa. Most of the students opt for BITS just for the brand name. The faculty at the BITS campus is not as good as that of IIIT Allahabad as it is funded by MHRD while BITS is a private institute. 

IIIT-A is popular for its coding culture. IT is one of the flagship courses offered there and placement records are at their best. Placement in the software domain is any day better at IIITs when compared to BITS. 

The following table shows a brief overview of the institutes:

IIIT Allahabad is the best choice among the two with good placement records, perfect campus, amazing faculties, and facilities. Being a government-affiliated institute has its own merits when compared to BITS Pilani Goa.

In the given three colleges, IIIT Naya Raipur is the best. Comparing such an institute on the basis of whether students choose that particular college over the other would be wrong. IIIT NR can be described in three phrases: fast-paced, project-based, and pioneering. Choosing which college over the other can be your choice. But why you should choose IIIT Naya Raipur to have some reasons: IIIT Naya Raipur has its own campus. Among all the new IIITs and NITs, it has the best course structure. The institute is equipped with all the facilities that are required for the successful completion of the graduation. From labs to classroom and auditorium to sports club everything is super cool. IIIT NR has most of the faculties with immense experience in their field. They are so helpful and always guide you at each level of your course. It is the first institute in Central India that has introduced Data Science and AI in B.Tech. The institute is located 25km away from Raipur city. You’ll be close to the railway station though. So, there are no transport issues. The institute gives you better exposure than any other new NITs. You will learn, grow and enjoy your campus life thoroughly. Hopefully, this helps in rectifying your confusion about the college options.

Before diving into any conclusion, it is important that you understand the basic difference between B.Tech and B.E degrees. Following which, you have to clarify the doubts you have regarding both NIT Goa and Goa Engineering College.

• If you weigh the general brand value that arrives with the NIT tag, you will then already be more exposed to the industrial demands and explore better opportunities at NIT.
• However, there has been a genuine depreciation at Goa Engineering College. 
• You can possibly go out, looking for particular job offers after the completion of the B.E degree but you will obtain better placements by the college cell itself. 
• When talking about the faculty, there are several Ph.D graduates from most of the top institutions who have been teaching at NIT Goa. 
• The highest salary package was 16 LPA at NIT Goa. 
• On the other hand, at GEC, you might or might not secure placement. 
• Their highest package sometimes does not reach even up to 7 LPA. 

Therefore, it is suggested that you opt for NIT Goa, as it will provide you with better opportunities. They have an active placement cell, which not only helps with placements but also conducts seminars, internships and industrial visits.