NIT Rourkela now is the country's second-best NIT. It is well equipped with great laboratory facilities. NIT Durgapur is behind Rourkela's facilities and infrastructure. 

Now to biotech versus chemistry. Biotech is a new area and currently evolving. You will have good research and higher education opportunities if you study in this area. You can do a lot of research in this area. As far as investment is concerned, it is much less important because there is less core business.

It's a strong branch when it comes to chemical engineering. It is also a strong area if you are involved in science or higher research. More industrial than biotech is applicable in this area. Statistics are higher than biotech during the placement process. Like many good recruiting firms around the world. There are Govt employees, too. The most Maharatna companies in this sector, big government companies like IOCL, HPCL are some of the popular ones. 

Biotech is the best for you if you want to study and investigate. Many explorable areas. NIT Rourkela offers the best biotechnology laboratory facilities. For biotechnology, this is the best NIT. It's not successful placing-wise. Key firms are much lower, only non-core firms must be reliant. It's fine MoUs for Nit Rourkela. Too fine faculty. You are highly trained and experienced. If you maintain a good CGPA, you can also have good international internships.

You will have to consider quite a few things before you decide between these 3 places. Most of my friends agreed that ECE is one of the toughest branches in engineering. 

• CSE and ECE, however, come under the same branch of software engineering. If you directly compare these two branches, CSE is much better than ECE. 
• Coming to the colleges, you can place NIT Surathkal and NIT Warangal in the tier 1 institutes. You will definitely have a lot of exposure here and some of the best students are from these popular indian engineering colleges.
• You will also see that most of them practice computer programming and become computer engineers. 
• Given their position, you can expect them to earn up to INR 5 to 50 lakhs per annum. This pay will also depend on what skills you earn. 
• Most of the companies will not look at your academic credentials. It is advised to you to develop your TopCoder and GitHub profiles since these are the profiles that your employer will look at.

Additionally, other job roles you can expect from these institutes include managers in various industries. These will highly depend on your luck and personal leaning. You can expect a pay of INR 5 to 15 lakhs per annum. However, a drawback is that these companies look at your academic profile heavily. So if you have a lower grade, it is possible that this could stand as a setback.

Finally, when it comes to Tier 3 colleges NIT Rourkela is better, the job prospects from these colleges are not that great. You can expect to have a salary of INR 3 to 4 lakhs per annum with most jobs in service based companies.

Go for NIT Rourkela if you are getting a seat in CSE. It is considered as one of the best NITs for CSE. 

The coding culture at the institute is outstanding and still developing day by day. You will be offered great exposure at NIT Rourkela. However, the institute has very high cut off and the competition is high.

Statistics –

BITS Pilani is a good option but not for ECE. It would be better if you go for CSE at NIT Rourkela.