If your ultimate goal is to do MBA and align your carer to the business side, it may be worth pursuing MBA directly. Rather than going for M.Sc , it better you get a job experience which wil give you pratical exposure than theorthical incase of doing M.Sc ..

So get this fact straight that no matter if you do Msc or not the end result would be you getting a job. Now the companies that come for placement doesn't really segregate students having a higher or a lower degree because what they came to take is MBA graduates. Trust me they  don't really see the bachelor degree you have. case in point my friend with English hons did MBA in marketing and got into a good job. Yes its that simple. They check your knowledge mainly on MBA domain only. But exceptions are there but its very minimal. First thing you must keep in mind is that you are  a science grad and MBA is all about business, so logic puts commerce students a bit ahead of the race but Btech candidates are  also favored sometimes because of their analytical skills.