Dont send ur application form like that because it would be of no use.
If u belong to SC/ST category then u can show ur caste certificate at the time of ur councelling but ur cut off maks will not be that of the other SC/ST students which will be relatively lower for than that of non SC/ST students. But if u are confidant that u can achieve even the cut off marks of the oc students then there will be no problem u can just take with u the original and photo copied Certificates with u at the time of councelling so that u can get a better department in the IIT u have chosen.
Also there would no problem if u belong to BC category as u can take the copies with u at the time of councelling.
Also U call to the administration number once and express ur problem. This may become a possible solution also for this problem.
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