CBSE 12th

There are few good universities that accept JEE Mains scores like Thapar University, Punjab Engineering College, Delhi Technological University and NSIT.

Hello Naimish,
Here are few good colleges apart from IIT which you can join if you failed to get admission into IIT and NIT:
BITS-Pilani
IIIT-Hyderabad
Indian Institute of Space Science and Technology
Anna University
DTU, Delhi
IIIT, Allahabad
NSIT, Delhi
Jadavpur University
BIT-Mesra and Ranchi
PSG College of Technology
Institute of Chemical Technology, Mumbai
PEC University of Technology
IIEST, Shibpur
TIET, Patiala
HBTU, Kanpur
IIIT, Gwalior
College of Engineering, Pune

Hello Danish,
If you want to become an engineer you have to be strong in maths because maths is the base of engineering. Yes, there is slightly less maths in CSE branch as compared to other branches but maths exist here as well. So try to make this portion strong.
You have almost 7 months before joining the college.

Hello Rahul,
JEE exam is only for admission to NITs and central funded university and if you have not crossed the cutoff then you can't get admission in type of colleges but for admission in other colleges you have to appear in the exams organized by these colleges.

Hello,
Please follow the link provided and you can get complete information about the exam:
https://www.google.co.in/amp/s/www.shiksha.com/university/panjab-university/exams/amp/puleet

You can get many private colleges such as LPU, Amity, Sharda, Noida International University, Chandigarh University, Galgotias University, Sikkim Manipal University, MS Ramaiah, Acharya Engineering College, Saveetha Engineering College, Kalasalingam University or Techno India University based on your marks in B.Tech mechanical, if you have given any other state engineering entrance exam/any other entrance exam like VITEE, SRMJEE or BITSAT see their result if you get a decent rank in any of the exam try taking admission on the basis of these, or you can drop a year to prepare for JEE Mains 2018.

In India you can prefer BITS, Pilani, VIT-Vellore, SRM KTR campus or Amrita University. You can check their details on their website.

Hi,
Here's the eligibility criteria for the MAT 2017 December exam:
Graduates in any discipline can take the exam.
Final year graduation students can also apply.
There's no age limit for MAT exam.
As you just cleared your 12th therefore you are not eligible to apply for MAT.