S. 11: Property held for charitable purposes-Delay in filing return of income along with audit report in Form No 10B-Form was submitted before completion of assessment proceedings-Procedural irregularity-Denial of exemption was not justified-Accumulation of income-Specified purpose-Donated to other trust-Constituted a violation of provisions of section 11(3)-Addition under section 11(3)(d) was justified. [S.11(2), 11(3)(d)]