The presentation will be in three parts. The first part will be on the “origin of Type II radio bursts without the coronal mass ejections (CMEs)”. There are debates on the origin of type II bursts in the solar corona: (i) flare blast-wave driven and (ii) CME-piston driven. We have made an analysis to check whether there are any type II bursts that can be generated without CMEs. The second part will be on the “relation between the X-ray plasma ejections and type IIs”. The plasma eruptions very close to the sun are observed in X-rays using the satellite Yohkoh. We have studied in detail the association between these X-ray plasma ejections and type IIs. The final part of the presentation will be on some of the recent works in progress.