I have an appointment in Toronto foe H1-B. Mine is F1-OPT-H1 case. My student visa was refused in 93 at delhi consulate. Do i need to mention in the DS-156 form that i was refused F1 visa back in 93. right now i am having new passport as my old was expired. The new number is different from the old one. I got F1 in 99. Please help soon.....