MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryEnvironmental ChemistryPrevious Year Questions
Which one of the following statements is not true? (Karnataka NEET 2013)
A.Clean water would have a BOD value of 5 ppm.
B.Fluoride deficiency in drinking water is harmful.
C.When the pH of rain water is higher than 6.5, it is✓ Correct
D.Dissolved Oxygen (DO) is cold water can reach a
Explanation
When pH of rain water drops below 5.6 it is called acid rain.
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