Calcination behavior of nano-crystalline lanthanum chromites doped with calcium and strontium has been probed by Fourier transform infra red spectroscopy, X-ray diffraction and small-angle neutron scattering as a function of temperature. Infra red spectroscopic result simply that over arrange of temperatures, some intermediate phase of do pant chromates evolve and then dissolve back, which has also been confirmed by the XRD. Neutron scattering data reveal a fractal type correlation of building blocks in virgin powders. Increase in fractal dimension and reduction in upper cut off vis-à-vis the densification of agglomerates were found with increasing calcinations temperature. Calcination, beyond 900 ºC,  results in breaking down of the fractal morphology almost completely. Such shrink age event also results   in a modification of the microscopic structure. These changes have been attributed to the compaction of agglomerates of both Ca-and Sr-doped lanthanum chromites, assisted via liquid state sintering by the melting of the intermediate phase sat intermediate calcination stages