Dear Ranjith, please go through the KEAM domicile eligibility criteria. Candidates will be categorised as Keralite, Non-Keralite Category I (NK I) and Non-Keralite Category II (NK II). In order to prove that candidate is an Indian citizen of Kerala origin, he or she has to submit certain documents. Please check this link for complete information. https://engineering-careers360-com.cdn.ampproject.org/v/s/engineering.careers360.com/articles/keam-eligibility-criteria/amp?amp_js_v=a2&amp_gsa=1&usqp=mq331AQECAFYAQ%3D%3D#aoh=15454113759532&amp_ct=1545411381040&referrer=https%3A%2F%2Fwww.google.com&amp_tf=From%20%251%24s&ampshare=https%3A%2F%2Fengineering.careers360.com%2Farticles%2Fkeam-eligibility-criteria

Your child comes under NK II Category.