. . . "(d) The principal of and interest on any bonds issued pursuant to this section and sections 3-21a, 31-222, 31-225a, 31-231a, 31-232b, 31-232d, 31-232f, 31-236, 31-250a, 31-259, 31-263, 31-264a and 31-274j shall be secured by a pledge of the Unemployment Compensation Advance Fund and any revenues, receipts, funds or moneys payable to the fund, including any federal grants or advances available for" . .