S. 147: Reassessment-Validity-High-pitched assessment on non-existing entity-Addition made on basis of Multi Year MNS Data without application of mind-Merger of assessee-bank and surrender of PAN ignored-Sanction under S. 151 mechanical-Reassessment was quashed-Exemplary costs of Rs 1 crore was proposed for passing high pitched assessment order contrary to the facts available on record. [S. 144, 148, 151, Art. 226]