law: Air (Prevention and Control of Pollution) Act, 1981
  32. Contributions by Central Government.
  The
  
  Central Government may, after due appropriation made by Parliament by law in
  
  this behalf, make in each financial year such contributions to the State Boards
  
  as it may think necessary to enable the State Boards to perform their functions
  
  under this Act :
  Provided that
  
  nothing in this section shall apply to any [ 21 State Pollution Control Board
  
  21 ] constituted under Section 4 of the Water (Prevention and Control of
  
  Pollution) Act, 1974 (6 of 1974), which is empowered by that Act to expend
  
  money from its fund thereunder also for performing its functions, under any law
  
  for the time being in force relating to the prevention, control or abatement of
  
  air pollution.