S. 148A: Reassessment-Conducting inquiry, providing opportunity before issue of notice-Initial notice-Personal hearing-Personal hearing not statutory mandate but discretion of Assessing Officer-Writ petition is dismissed-Assessee can raise contentions in reassessment proceedings-Interpretation of taxing statutes-Legislative intent-Plain language of provision must be given its ordinary meaning.[S. 132, 147, 148, 148A(b),148A(d), Art. 226]