What is the maximum specification for water cement ratio?

What is the minimum depth of water seal in floor trap?

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

At the last main hole of building sewerage, ______ is provided.

________ should not be placed near water body.

Which of these is a positive effect owing to the discharge?

H2S gas is denser than air.

_________ is the removal of excess surface water from the land to enhance crop growth.