S. 147 : Reassessment-Within four years-Issues already examined in original assessment-Change of opinion-Reasons recorded without application of mind-Objections not properly dealt with-Reassessment notice and order disposing objections quashed. [S. 36(1)(vii), 36(1)(viia), 80-IA, 143(3), 148, Art. 226, Companies Act, 2013, S. 129]