Hello Kusha

JBIMS accepts admission through MAT score or the accept MAT score. Not only MAT but they also accept  valid score of at least one examination, namely: MAH CET/CAT/CMAT/XAT/MAT.

https://bschool.careers360.com/articles/jbims-mumbai-admission

Hence, you are eligible for JBIMS if you have appeared in MAT 

however K J Somiya college does not accept MAT score. To apply for admission there the candidate should be registered for CAT 2018/XAT 2019/CMAT 2019 or GMAT taken till February 10, 2019 and must score well to become eligible for admission. GMAT scores of last three years are valid.