Hello, congratulations for the result. 

For finding out in which college  you have a chance you can use the gate college  predictor tool available on careers 360 website whose link is given below

Https://engineering.careers360.com/gate-college-predictor

I hope this helps. all the best.

Hello Shubham, your admission to any college in m.tech can be analysed by looking at the closing cut-offs of colleges for previous year.

Also let me tell you score card is not necessary when individual Institutes release their cut offs. (Rank is what Matters)

This link is for the cut offs of IITs and NITs for previous year in mechanical engineering:

https://www.google.com/amp/s/engineering.careers360.com/articles/gate-cutoff-for-nits/amp

https://www.google.com/amp/s/engineering.careers360.com/articles/gate-cutoff-for-iits/amp

And if you don't get admission in IITs and NITs, there are other colleges that accept the GATE score: (these are some popular colleges)

1. Delhi Technological University, Delhi

2. College of engineering, Pune

3. RV College of engineering, Bangalore

4. Guru Gobind Singh Indraprastha University, Delhi

5. Jadavpur University, Kolkata

6. Jamia Millia Islamia, New Delhi

7. PSG College of technology, Coimbatore

8. BMS College of engineering, Bangalore

9. Thapar Institute of engineering and technology, Patiala

10. SASTRA University, Thanjavur

Following is the link for around 800 colleges for M.tech in mechanical engineering:

https://engineering.careers360.com/colleges/list-of-engineering-colleges-in-India?f%5B0%5D=sm_college_degree%3AM.E%20/Mtech.&f%5B1%5D=sm_course_offered%3AMechanical%20Engineering&f%5B2%5D=sm_quali_exam%3AGATE

Also to get a more accurate prediction about the colleges you can get, have a look at the college predictor: 

http://bit.ly/2J9S0MN

All the best! 

I hope this helps.