Can I give kcet 2018 I am from Maharashtra

You can give Karnataka CET 2018, but you will not be eligible for admissions into any of the participating institutions of KCET 2018, as you need to be a domicile of Karnataka state. In other words, in the participating institutes of KCET 2018 only those candidates who have done their schooling from the recognised schools in Karnataka state only (completing at least 7 years of study, including the qualifying examination/2nd PUC/12th) will be eligible for admissions. So, it's not wise to appear in KCET if you belong to Maharashtra. Still if you are interested in private colleges in Karnataka, COMEDK UGET is the alternate option which does not require domicile conditions of the state. It's better to appear in MHT CET 2018, as you are from Maharashtra and you will not have to face domicile challenges for admission.