I have passed 10th in 2010,made gap 1 year,then joined 11 in 2011 but passed 12th on 2014 ex regular,im i eligible for mci screening test?

Hello,

Gap between 11 and 12 might not be an issue.Following is the eligibility criteria :

Candidate must be an Indian National or Overseas Citizen of India (OCI) to take FMGE 2018.

To fulfil FMGE eligibility criteria 2018, candidates must hold a primary medical qualification. Furthermore, the qualification must be approved by the Indian Embassy situated in the country from where the qualification is obtained. The qualification should be recognized for enrollment as a medical practitioner in the respective country.
As it is mandatory to possess the medical qualification at the time of FMGE 2018, it must also be obtained on or before November 30, 2018.

Candidates who have completed an undergraduate and postgraduate degree from the United States/United Kingdom/Australia/New Zealand/Canada and are seeking registration to practice in India are not required to appear for FMGE 2018 considering they are recognized for enrolment as medical practitioners in that country.
Only those candidates who will fulfil the above mentioned criteria are eligible to take FMGE 2018.

https://medicine.careers360.com/articles/fmge

I hope this helps.