The eligibility criteria for MHCET (Maharashtra Common Entrance Test) can be based on domicile rather than place of birth.

MHCET often considers domicile, not necessarily the place of birth, for exam eligibility. Since your son has completed his entire school education in Maharashtra, this might strengthen his case for domicile in the state.

Overall, while being born in Canada might not be a direct disqualifier, having completed his schooling in Maharashtra strengthens his case for domicile in the state. By gathering documents to prove his residence and referring to the official MHCET website or helpline, your son can get a clearer picture of his eligibility for the exam.

https://www.careers360.com/exams/mht-cet

I hope it helps!