Shillong, March 31: To inculcate the culture of preparedness among the community and facilitate the district administration in reviewing adequacy and efficacy of the Disaster Magement Plan of the district, the District Disaster Magement Authority (DDMA), East Khasi Hills today conducted a mock exercise on earthquake scerio of magnitude 7.5 on ritcher scale at Marba Hub, Police Bazar, Shillong, press release stated.