law: 18. Repayment of capital and loan with interest.-
  The Corporation shall repay, at such intervals and on such terms as the Central Government may determine, the amount of capital provided under section 15 and all loans advanced under section 16 with interest at such rate as may, from time to time, be fixed by that Government and such repayment of capital or loan or payment of interest shall be deemed to be part of the expenditure of the Corporation.