verification forms for 10 and 12 are available on CBSE website.... depending on where u did ur 10th and 12th from , you have to send to respective regional offices..... i got my verifications posted to my address coz there is no way DGCA takes on themselves to get verification done... fill the form ( might have to change the dates coz i think they are old ) send to CBSE with req DD and call them and let them know.... some of them are real helpful...
good luck