paras-d@Paras:~$ dpkg -l | grep virtualbox
ii  unity-scope-virtualbox                      0.1+13.10.20130723-0ubuntu1                                 all          VirtualBox scope for Unity
rc  virtualbox                                  5.0.24-dfsg-0ubuntu1.16.04.1                                amd64        x86 virtualization solution - base binaries
iHR virtualbox-5.1                              5.1.10-112026~Ubuntu~xenial                                 amd64        (no description available)
rc  virtualbox-qt                               5.0.24-dfsg-0ubuntu1.16.04.1                                amd64        x86 virtualization solution - Qt based user interface