My paper was accepted in Springer International Conference and National conference. What to do? We had prepared the paper and applied for National Conference. After some days came to know about the International Conference and improved the paper and applied for it. After a month we got an accept mail from Springer Conference(Not expected as we are beginners). Today we presented our paper in the National Conference and our paper was selected as the Best Paper as well as got shortlisted for the International Journal. Now we are totally confused what to do ? Can we accept for publishing in the Journal but the Slight Modified (Improved) paper will be getting published in Springer Conference in July this year. Will this lead to any problem ?

This would help a lot in boosting our resume and also getting an Admit from Good University for my Masters.
The only thing you can really do here is to contact the organizers and publishers of both journals, and indicate what is going on. More likely than not, you will need to withdraw one of the papers, as publishing both papers under very similar titles with identical scientific content (or very nearly so) is considered inappropriate.