S. 72 : Carry forward and set off of business losses-Carry forward and set off losses-Change in share holdings-Companies which public are not substantial interested-Tribunal was justified in directing the AO to expunge the concluding remark brought forward loss is not allowed to be carry forward-Unabsorbed depreciation and capital losses do not fall within the scope and ambit of S. 79 [S.32(2), 79, 254(1), 260A, 1922 ITACT, S. 24(2), 24(3)]