B.Tech

Yes, you can but to be certain, you will have to wait for the cut-offs to be released.

B.Tech is higher engineering in comparison to B.Sc. Job opportunities after B.Sc Industrial Chemistry are limited in comparison to BTRech Chemical engineering. India has very well developed Chemical Industry including Petroleum & gas both in Government and private sector. It is core sector with lot

Admission in engineering colleges is based on engineering entrance examination. You may refer to the following link for popular engineering entrance examinations: https://www.shiksha.com/b-tech/exams-pc-10. You may select few engineering colleges by appearing in them after 10+2 stage with PCM subjec

Vacancies accrue every year in second year because of students moving out based on JEE and BITSAT etc performance. Therefore, every engineering college allows change of branch subject to availability of vacancies or slot and allocation of branch is based performance in first year and other criteria

The admission into PSG College of Technology, Coimbatore is based on the single window counselling under Anna University.
It also depends on your caste and the cut off marks. I think you cannot get PSG as your cut off is low. If you mention your caste then I may tell accurately.
For previous year’s

No, getting shortlisted for counselling does not guarantee admission in VIT. It depends upon the availability in seats for the branch. Ranks under 1000 are eligible for scholarships.

B.Tech IT is better than B.Sc IT.

If you are from Delhi then you can get admission for biotech in IPU College, Delhi with 1367 rank. You just need to go for counselling.