Hello Smohapatra98,
when - how Michael suspects -the problem is to unzip a *.zip(?) or zipped files, you should use our good old friend Google with these keywords https://www.google.de/#q=unzip+zip+files Wellknown are http://www.7-zip.org/, I for my part use a German product >>> http://www.speedproject.de/
Good luck!
Hans-Günter