Hello
rachitarora .....For a TOEFL waiver, either your transcript must suggest explicitly that the medium of instruction was english or you would have to get a letter from your University Registrar stating the medium of instruction was english during your entire course.
I received the following reply from Zunaira
"Thank you for your email. In order for us to waive your English exam requirement, please note that your transcript/degree certificate must indicate English was used as the medium of instruction. Or, you would have to request your school to send an official letter stating that the above is true.
Unless the medium of instruction during your entire undergraduate studies was in English, you would have to write one of the four English exams: TOEFL, IELTS (Academic), MELAB, or PTE.
I hope this will help, please feel free to contact us should you require further information."