For an engineering student, his choice of branch is very crucial as it is the determining factor of his career. The institute is important no doubt but only for 4 years. For the rest of your life, your branch will shape your career more than anything.

The scope of Chemical Engineering is very wide and covers a humongous range of fields like 

• Oil and Gas industry
• Petrochemical industry
• Fertilizer industry
• Nuclear industry
• Steel industry 
• Paint industry 
• Pharmaceutical industry 
• Cement industry

Chemical Engineering graduates are sought by the above industries at large.

The work of a chemical engineer is to operate the plants optimally. He is also responsible for designing the plants along with a team of other branch engineers. India has less scope in this industry in comparison to abroad. With topics covered like thermodynamics, fluid mechanics, and heat transfer the branch has more of a physics element than a chemical element. 

It’s completely on you which industry or nature of work you are willing to go for. It’s important to note that the career growth of a chemical engineer will not be as fast-paced as that of a CS graduate but the wait will be worth it in the end.

I will restrict my answer to Engineering Physics and Chemicals only as I know the same only. 

• The major criterion followed at IIT Delhi by all the branches is a well-maintained CG. To secure good placements one has to constantly score a good CG throughout the program.
• During your admission, the department does not play any role but your 85 percent constraint on minimum possible strength does.
• Engineering Physics is a unique branch for those highly passionate about Physics and want to pursue higher studies in the same
• To secure core jobs, one has to move to MTech in Engineering Physics from BTech in Engineering Physics.
• For Chemical Engineering students, BTech is more than enough to secure decent packages and great research opportunities outside India.
• Consultancy and Analytics jobs are offered equally to students of all the departments 
• Engineering Physics graduates usually take up consultancy or IT jobs 
• Chemical Engineering is the most laid-back department of IIT Delhi with very flexible academics thus making it easy to maintain a decent CG throughout. 

I wouldn’t suggest anyone go for Engineering Physics if they have no intention of pursuing it later. Instead, look for other options in BTech and explore your interests.

Irrespective of whichever Institute you go for, CSE is the most demanded branch today and has the best pay scale and job prospects. So, if it’s placements you are after, then BITS Pilani CSE is the right choice for you.

However, if you want to become an entrepreneur then Delhi being the capital is the absolute best place for you. Choosing IIT Delhi on the pretext of learning coding in the last year is a wrong mindset and at the end of the day, you will find yourself with little exposure and knowledge than those who learned coding for 4 years.

Make a well-informed decision considering the pros and cons of both institutes and courses.

Yes, irrespective of the branch, choosing IIT Delhi will always prove to be beneficial for you. IIT Delhi has ties with many big firms that visit the campus for placements and offer great packages irrespective of your branch. One needs to be proficient in DSA and other computer science core subjects such as OOPS, OS, DBMS, and Computer Networks. A good grasp of these will fetch you a high-paying job no matter which branch you belong to in IIT Delhi.

Although most companies that visit IIT Delhi also visit NIT, your IIT tag will always fetch you extra benefits and no one can deny that. For instance, the same role offered to an IITiand will have more salary than that offered to a non-IITian.You can easily switch roles and fields given the brand name of the institute you are associated with. IITians even have more opportunities for higher studies in Foreign countries than non-IITians.

IITians especially from Mumbai or Delhi are always given preference over non-IITians hence it is advisable to go for IIT Delhi in any branch.

Both the programs, Chemical Engineering at IIT Madras and Computer Engineering at IIT Indore offers excellent courses and opportunities. However, the choice of the program is more of a personal decision as it depends on career goals, personal interests, and other criteria. It's not a hidden fact that Computer Engineering has a wider scope in almost all sectors in comparison to Chemical engineering. So obviously it is a safe option, but what if you take a specific branch just for placements and then regret it later? 

If you take Chemical you can also change your branch to Computer later but it won't be possible Vive Versa. You must decide after considering all factors and most importantly your interests. Find out what makes you happy the most out of coding, data analysis, or research in a chemical lab, finding solutions for medicinal products, health, synthetic materials, and so on. 

There are examples of IITians dropping out to chase their dreams after realizing they were chasing the wrong branch. Only you can identify your innermost driving factor that will sustain your happiness later on in life.