S. 119: Central Board of Direct Taxes-Circular-Power vested in authority goes with duty to exercise it to advance the purpose for granting such power-Duty to exercise power in aid of enforcement of public or private right of citizen-Genuine hardship-Failure to file Form 10IC-tax New concessional rate of tax at 22 per cent-Delay ought to have been condoned. [S.115BAA(2), 119(2)(b), Art. 226]