Approval authority for tax-exempt trusts changed to Chief Commissioner or Director General with revised application procedure. Substitution of rule 2C designates the Chief Commissioner or Director General (as authorised by the Central Board of Direct Taxes) as the prescribed authority to receive and decide applications under sub-clauses (iv) and (v) of clause (23C) of section 10, requires such applications to be presented in Form No. 56, and amends Form No. 56 notes to substitute references to the authorised Chief Commissioner or Director General and to permit delegation by that officer.