Chemical Engineering

Institute of Chemical Technology (Deemed to be University of MHRD/ UGC), Mumbai is the best. ICT has the 27 overall NIRF ranking while class 12th NIRF ranking for its Engineering courses. In November 2017, National Assessment and Accreditation Council (NAAC) Committee visited ICT and graded with A+ CGPA of 3.77 out of 4. ICT has been ranked amongst the top ten Engineering Institutes of India and 19th amongst the top universities if the country. It is also recognized at rank 4 amongst the Pharmacy Institutes. In the BRCS QS Universities ranking 2018, ICT ranked at 118; whereas, in 2019, ICT is 115 among all BRICS.

Chemical engineering is a discipline influencing numerous areas of technology. In broad terms, chemical engineers conceive and design processes to produce, transform and transport materials beginning with experimentation in the laboratory followed by implementation of the technology in full-scale production. https://www.shiksha.com/engineering/chemical-engineering-chp
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Scope of Chemical Engineering in India. Chemical Engineers are in demand at mineral-based industries, petrochemical plants, synthetic fiber units, petroleum refining plants, chemical industries, refineries, pharmaceutical companies, paints manufacturers, fertilizer industry, textiles sector, plastics, and explosives.

Placement is good for Chemical Engineering. Around 95% of the students got placed. The highest package is 32 LPA, average is around 8 LPA and the lowest is 6 LPA. All major companies visited the campus for recruitment.

For that, you should get knowledge about the various higher education levels, then you will have to know about the criteria of an entrance, and rest on forms and tests
Good luck for future.

No, you cannot be eligible for NIT Surat in chemical engineering. As you have an low score in Mains. You should now focus on April Mains exams and score good marks to get NIT Surat.

Most of the students from Computer Science or Electronics wants to change their branch to Engineering Mathematics or Physics or Aeronautical engineering or any other branch. A candidate can chance his/her engineering branch for M.Tech.

Yes, through lateral entry. But not every college allows lateral entry.

Your scores seems pretty decent I think you should be able to. Good luck.