suspended impurities dissolved impurities both suspended and dissolved impurities none of the above
Answer Discuss in Comment
standard silica scale standard platinum scale platinum cobalt scale standard cobalt scale
starch iodide method orthotolidine method both (a) and (b) none of the above
dose of coagulant biochemical oxygen demand dissolved oxygen residual chlorine
killing of disease bacteria complete sterilisation removal of turbidity removal of hardness
applied chlorine sum of applied and residual chlorine difference of applied and residual chlorine residual chlorine
post chlorination pre-chlorinatlon break point chlorination super chlorination
de-chlorination hypo-chlorination pre-chlorination super chlorination
increases decreases remains unaffected none of the above
grid iron system ring system radial system dead end system
"Scientists dream about doing great things. Engineers do them."
