"going by your logic we all should quit our jobs, studies etc to provide relief to the flood victims, as a student my top priority is to my studies -"
Leaving your studies and jobs for a few weeks won't kill you or your fellows, but failing to do so may well kill hundreds of thousands of your countrymen. So what choice is there, really?
What kind of student are you? Engineering? I've been there. The dean would have organized us into teams to design equipment for a relief project within four days and the local aerospace firm could have built it out of odds and ends within a 2-4 weeks, depending on the agreeability of the labor unions.