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Yes , if the candidate obtain the qualifying marks even if he doesn't score well in other subjects. Then he candidate can study abroad .

However candidate should fulfill the following criteria

The student is required to have attained the age of 17 on December 31 of the year he is pursuing his admission.

There is no upper age limit to apply for MBBS abroad.
The student must have completed his 10+2 from a recognized board.

The student must have an aggregate percentage of at least 50% or above in Physics, Chemistry, and Biology and must have studied English as a compulsory subject during his 10+2 years
.
The candidate would also be required to submit a medical certificate at the time of admission stating that the applicant is not suffering from any contagious diseases.

Students are also required to qualify theNational Eligibility Entrance Test (NEET). This is mandatory even if the student is planning to pursue his medical studies abroad.

Candidates should remember that the upper limit for appearing for the NEET is 25 years for General candidates and 30 years for SC/ST/OBC candidates
There is limited time left for neet 2021, so you should be focusing on your preparation by revising the chapters and solve mock test as well as previous year question papers. It will boost your confidence and provide help in your preparation.

For solving sample papers go through the following link;

http://medicine.careers360.com/articles/neet-sample-paper/amp

https://learn.careers360.com/test-series-neet-free-mock-test/

All the best for your exam

Good luck