Standard EDTA (ethylene diamine tetra acetic aciD. solution is used to determine the_______________?

Related Mcqs:

The most common cause of acidity in water is_______________?

A. carbon dioxide B. oxygen C. hydrogen D. nitrogen...

Disinfection efficiency is________________?

A. reduced at higher pH value of water B. unaffected by pH value of water C. increased at higher pH value of water D. highest at pH value equal to 7...

In facultative stabilization pond, the sewage is treated by________________?

A. aerobic bacteria only B. algae only C. dual action of aerobic bacteria and anaerobic bacteria D. sedimentation...

The slope of sewer shall be__________________?

A. given in the direction of natural slope of ground B. given in the direction opposite to natural slope of ground C. zero D. steeper than 1 in 20...

The overflow rate for plain sedimentation tanks is about__________________?

A. 500 to 750 litres/hour/ m2 B. 1000 to 1250 litres/hour/ m2 C. 1250 to 1500 litres/hour/m2 D. 1500 to 2000 litres/hour/m2...