.Where the Central Board or any State Board constituted under the Water (Prevention and Control of Pollution) Act, 1974 (6

of 1974), is superseded by the Central Government or the State Government, as the case may be, under that Act, all the powers, functions and duties of the Central Board or such State Board under this Act shall be exercised, preformed or discharged during the period of such supersession by the person or persons, exercising, preforming or discharging the powers, functions and duties of the Central Board or such State Board under the Water (Prevention and Control of Pollution) Act, 1974 (6 of 1974), during such period.