Yes, you can apply for IIHM eCHAT if you are appearing for Class 12 in the same year. However, you must have secured a minimum of 55% marks in Class 10 or its equivalent. If you are selected for the IIHM eCHAT exam, you will need to submit your Class 12 mark sheet by a certain date. If you are unable to submit your Class 12 mark sheet by the deadline, your admission may be canceled. It is also important to note that your admission to IIHM will be provisional until you submit your Class 12 mark sheet and meet all of the other eligibility criteria.