Freshers India

Alum as a coagulant is found to be most effective when pH range of water is                        

As compared to cast iron pipes, steel pipes are                        

As compared to geometrical increase method of forecasting population, arithmetical increase method gives                        

As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is                        

As compared to shallow-wells, deep wells have                        

Average rate of water consumption perhead per day as per Indian Standard is