Hey!

See, there is nothing mentioned about the orientation of thumb impression. However, it must be your left thumb impression and in case of any eventuality you can put right thumb impression. But, generally it is kept vertically, still no issues with horizontal alignment. Also, make sure that you do not sign there on the admit card, as it is supposed to be done in front of the invigilator.

Thank you

Hey!

See, there is nothing mentioned about the orientation of thumb impression. However, it must be your left thumb impression and in case of any eventuality you can put right thumb impression. But, generally it is kept vertically, still no issues with horizontal alignment. Also, make sure that you do not sign there on the admit card, as it is supposed to be done in front of the invigilator.

Thank you