Dear Student,

In this situation, the best thing you can do is to go to your school administration office and tell that you have lost your hall ticket by mistake.

For showing then regards, you can write application too, to the officials of your school. Now chances are that they will take the responsibility to produce your admit card again.

But in case they do not do so, then you have write the application to your board officials or you can also visit the regional office of the examination board you are concerned about. You may have to pay some amount for it. And make sure that you have other documents with you as they will require it to produce new admit card.

I hope this information helps you.

All the very best!!