Both the colleges have their own uniqueness and advantages and disadvantages. But if I were to give a personal choice, then I'll go for Galgotiya college. The placements of Galgotiya college have a little edge over rkmrc college and also the infrastructure and ambience is better one. Another reason being rkmrc college only accepts male candidates.

Kindly refer to the sites below for more detailed information..

https://www.careers360.com/colleges/ramakrishna-mission-residential-college-kolkata

https://www.careers360.com/colleges/galgotias-college-of-engineering-and-technology-greater-noida

Best wishes. Thank you.