Dissolved oxygen content in river water is around __________ ppm. (A) 5 (B) 100 (C) 250 (D) 500

Dissolved oxygen content in river water is around __________ ppm.
(A) 5
(B) 100
(C) 250
(D) 500
by

1 Answer

Answer :

(A) 5
by

Related questions

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Pick up the correct statement from the following: A. Hydrogen sulphide gas in excess, may cause corrosion of concrete sewers B. 4 ppm of Dissolved Oxygen (D.O.) is ensured before discharging the treated sewage in river C. Solubility of oxygen in sewage is 95% of that of distilled water D. All the above

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The chloride content of treated water for public supplies should not exceed (A) 100 ppm (B) 150 ppm (C) 200 ppm (D) 250 ppm

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A hardness depth of about 3 mm can be achieved by induction hardness in __________ seconds. (A) 5 (B) 100 (C) 250 (D) 500

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