Which of the following components of a storage tank is used to clean the tank periodically?

Which of the following materials is not used to make storage tanks?

According to the Indian Standard recommendations, a water requirement of ___ per head per day is assumed for residential…

Which of the following traps is commonly known as nahni trap?

The diameter of a sludge soak pit varies from ______

The pedestal type European water closet is also known as ____

The outlet pipe in the septic tank is kept about _____ lower than the inlet pipe.

Which of the following is not a component of the plumbing drainage system?