S. 148A: Reassessment-Conducting inquiry, providing opportunity before issue of notice-Pendency of appeal-Scrutiny assessment order pending in appeal rendered infructuous-Order passed under section 148A(d) is held to be valid-Assessee is given liberty to seek appropriate remedy if adverse reassessment order is passed.[S. 143(3), 147, 148, 148A(b) 148A(d), 250, Art. 226