The color of Bramhaputra river has become very dark and muddy since the later half of 2017 Newchanne...........

Environment and Ecology Water Pollution

The color of Bramhaputra river has become very dark and muddy since the later half of 2017. Newchannels have reported it, and the issue was raised even in Parliament, during Winter-2017 session. Which of the following test is most suitable to objectively measure this particular water quality?

Fecal Coliform measurement test

Biochemical Oxygen Demand test

Total Dissolved Solids test

Turbidity Test

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Explanation:

Fecal Coliform a bacteria that propagate in the digestive tracts of humans and animals, it can enter a waterway usually by animal / human waste and septic tanks. BOD is a measure of oxygen removed from an aquatic environment by aerobic microorganisms. Turbidity is the measure of relative clarity of a liquid. It’s measured in nephelometric turbidity units (NTU). In ordinary river water, it’s usually less than 10 NTU. Bramhaputra has 290-400! Experts previously blamed it on the construction of dams and tunnels in China but now it’s revealed that earthquake and landslides in Tibet are responsible behind this mudding of water.