The method of cleaning of rapid sand filters
ALong laborious method
BCompressed air method
CScraping
DAgitation sod back washing
No.1 PSC Learning App
★
★
★
★
★
Related Questions:
The process of killing pathogenic bacteria of water borne diseases to make it safe for use in hospital is called:
Which of the following has minimum detention period
The process of passing the water through beds of fine granular materials like sand is known as:
The suitable cross-section of sewers to combined flow is
The main clear working space for a pit as recommended by IS code is: