What is the odour threshold limit of H2S gas?

Indian water closet generally uses __

Hydrogen sulphide is formed under __ conditions.

H2S gas is ___ to generate sulphuric acid.

_______ is generally used in food processing units.

What is the flow velocity condition required for the formation of hydrogen sulphide?

Which of the following runoff formula is correct w.r.t. Kuitchling formula?

The house sewer should always be ___