Is it tough for a science student to pursue BBA and MBA?

No, it is not tough. You just have to have business acumen.

Sahil, a subject being tough for a student or not tough for him depends upon his own capability and liking towards the subject. But generally speaking a science students develop more flair for logical reasoning and this if utilized effectively during management studies, would make the subject sound

Yes i think so . tough in the sense that they are not familiar with the subject required for BBA

Nothing is tough if you hv interest in it. To understand what bba is all about, go thru the course structure of it for any university and you will get an idea.