What is the minimum limit of dissolved oxygen that must be in the water for survival of aquatic life?

4 mg/L
The minimum level of Dissolved Oxygen (DO) necessary in the rivers and streams is 4 mg/L (ppm) for the survival of fishes and aquatic animals.

Can you drink water with high dissolved oxygen?

A high dissolved oxygen (DO) level in a community water supply is good because it makes drinking water taste better. However, high DO levels speed up corrosion in water pipes. For this reason, industries use water with the least possible amount of dissolved oxygen.

What is the least permissible limit in drinking water?

According to WHO 1984 and Indian standard drinking water specification 1991 the maximum permissible limit of fluoride in drinking water is 1.5 ppm and highest desirable limit is 1.0 ppm. Fluoride concentrations above 1.5 ppm in drinking water cause dental fluorosis and much higher concentration skeletal fluorosis.

What is the permissible limit of do?

The permissible limit level of dissolved oxygen in most rivers, lakes and stream that required for most aquatic organisms life is at least 5mg/l .

What is permissible and acceptable limits of total dissolved solids in drinking water as per IS 10500 2012 Mcq?

As per IS-10500: 2012 Permissible limit in absence of alternate sources (i.e. cause for rejection) for chlorides and sulphates are 1000 ppm and 400 ppm respectively.

What is the maximum permissible limit ISI of lead in drinking water?

According to the World Health Organization and US Environmental Protection Agency guidelines, maximum allowable concentration of lead in drinking water are 0.01 mg/l and 0.015 mg/l , respectively [16, 17].

What is permissible and acceptable limit of total dissolved solids in drinking water as per IS 10500 2012?

In this Question the permissible limits for chloride and sulphate in the absence of an alternate source of water, which is different than the acceptable limit….

Can dissolved oxygen be greater than 100?

Dissolved oxygen readings of greater than 100\% air saturation can occur in environmental water because of the production of pure oxygen by photosynthetically-active organisms and/or because of non-ideal equilibration of dissolved oxygen between the water and the air above it.

How much oxygen is in a liter of water?

what is the amount of oxygen in i litre of water? can anyone pls give me the ans? Water has 1 part of oxygen. That means 18 g of water is present in 22.4 L. This has 8 g of oxygen.

What is the maximum permissible limit ISI of chromium Cr in drinking water?

According to WHO and ISI, the permissible limit of chromium in drinking water is 0.1 mg/l and 0.05 mg/l respectively [22].