Hey Tulsi Thakur,
No,the sudent who is failed in any of the subject he is not elgible and first of all you are not allowed /elgible/appear to write IIT-JEE examination.
Students need to be qualified in their 10+2 or equivalent examination from a recognized board.
But you need to get passed inorder to recieve your Memo/Certificate from the recognised board which is to be submitted for verification at IIT.
All the best!
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