CBSE 12th

Hi,
You have to score minimum of 60% in 12th and must clear your JEE (Main and Advanced). Recommended subjects are PCMB. For more details please check the IIT-Madras website
https://www.iitm.ac.in/academic-programmes
https://www.iitm.ac.in/admissiontests

You should do what your interest is. Do not look at the courses with percentage of your undergraduation. Undergraduation marks don't matter later. But your interest DOES!

Hi Harshit, for engineering admissions you must clear the state level entrance exams. You are not eligible for JEE or BITSAT. Admissions will be based on your entrance exam scores and also the merit list of the different colleges. You may check this list for the engineering colleges and previous cut-offs
https://www.shiksha.com/engineering-chp6

Hi,
You can apply after the merit lists are out but your application won't be considered for the final enrollment till you have cleared the compartment.

Hi,
Ramanujan College
Shaheed Bhagat Singh College
Jagannath University, Haryana etc are some of the good colleges. You can check this list here, you have to wait for the merit list for the admissions
https://www.shiksha.com/accounting-commerce/colleges/b-com-colleges-india

Hi Rajan
You can check the links here to check the entry requirements of the colleges.
https://www.shiksha.com/engineering-chp6
Here is the college predictor tool
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Hello,
I have passed class 12th (CBSE) in 2017. I suggest that you study NCERT but refer SL Arora as it will help you more. Go through the board papers of last 10 years and you'll be ready to score 90+ marks in physics (HSC).

Hi
After PCM, you can choose from:
B.E./B.Tech
B.Sc
B.Arch
Defence
Navy
and so on.
If you have interest subjects other than engineering you can see B.Com, BBA, B.Sc-LLB etc. You have already applied to two colleges so you must be knowing what you want to study.

Hi Ashish,
You can take the state level engineering exams and apply to reputed colleges such as School of Aeronautics, Alwar, Alliance College of Engineering and Design etc. To increase your chances of placements work hard on your academics. If you have excellent grades and project works during your Bachelor's chances of getting placed will be good. 60% is alright and there is nothing to worry. You can check this list
https://www.shiksha.com/b-tech/colleges/b-tech-in-aeronautical-engineering-colleges-india