Pollution control board in India:

What is the permissible noise level at night as prescribed by central pollution control board in residential areas?

In an organisation of pollution control board, engineers are represented by a circle, legal experts by a square, and environmentalist by a triangle. Who is most represented in the board as shown in the following figure ?

In an organisation of pollution control board, engineers are represented by a circle, legal experts by a square, and environmentalist by a triangle, who is the most represented in the board as shown in the following figure?

Limit of BOD prescribed by central pollution control board for the discharge of industrial and municipal waste waters into natural surface water, is

The water prevention and control of pollution act passed in India :