i got 642 score in gate 2010 AIR is 1172

is there any chance to get in IIT??

Dear Mr. Harsh;

Yes, there are very less chances to  get a seat In IIT but not direct stream. You may get a seat in indirect branch like AHEC In Roorkee, corrosion engineering, welding technology and some higher branch without scholarship . So I will suggest that there are some possiblily in IITR, IITG & New IIT so apply there. This is also depends on your branch which is not mentioned here. so please post that so that I can give you a more clear picture.

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All the best. 
Regards,
Askiitians Experts
Pramod Kumar
IITR Alumni