Hi Akhil, the cutoff varies every year based on various factors like number of test takers number of seats available difficulty level of exams etc. However going by the past cutoffs, some of the IITs chances are, 

1) IIT Madras 

2) IIT Bombay 

3) IIT Kanpur

4) IIT Roorkee

You can refer to the below link, to get to know the cutoff for various courses under Metallurgical in different IITs and their cutoffs, 

https://engineering.careers360.com/articles/gate-cutoff-for-iits

hello!

Yes,you have score good marks and rank ,you will get admission in good IITs on you rank you can see the cutoff rank of IITs with gate rank on the below link.

https://collegedunia.com/exams/gate/cutoff

All the best!