Hi Sadhana,
As per GATE 2018 cut off analysis, the cut off for SC/ST category and for Mechanical Engineering branch is 23.1. The last year cut off for IITs for SC category for Mechanical branch was 400. The chances are less. Though you can check the details on the link https://engineering.careers360.com/articles/gate-cutoff-for-me.
Also, you can find the colleges as per your score with the help of link https://engineering.careers360.com/articles/gate-college-predictor.
All the best!!
You can check your chances in various colleges based on your score and category, y ou should try Careers360 college predictor and rank predictor.
Link for C areers360 rank predictor:- https://engineering.careers360.com/gate-college-predictor
All the very best and good luck.
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