You may get it from National Bureau of Soil Survey & Land Use Planning, Nagpur, India. The data also probably may available with National Remote Sensing Centre and Indian Space Research Organization (ISRO).
Thanks everyone! I myself have been able to prepare soil texture map by running a code (on the principle of soil texture triangle) using three soil rasters - sand, silt and clay.
It will be better to have some soil survey report of the particular Indian city you are interested in.Texture of the surface horizon may not be the right choice if you wish build up some concept; you need to have textural data of all horizon of soil profile.as textural class. You may inquire at NBSS &LUP, Delhi Regional Centre, IARI Campus, ND-110012.