Hello,
You have not mentioned the name of the college/University which you are interested in, based upon which the syllabus may vary a bit.
I have shared with you the official link for a PDF file where you will get the syllabus for BTech fashion technology at Anna University, Chennai. The syllabus in the other colleges will be more or less the same. There may be small changes:
https://cac.annauniv.edu/PhpProject1/aidetails/afug_2013_fu/32.%20Fash%20Tech.pdf
Good Luck
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