Given below are two statements. In the light of the above statements, choose the correct answer from the options given below.
Statement I:Chlorine is one of the most commonly used inexpensive chemical disinfectants for water.
Statement II:Optimum fluoride levels in drinking water help prevent cavities in children.
ABoth Statement I and Statement II are correct ✓ Correct
BBoth Statement I and Statement II are incorrect
CStatement I is correct but Statement II is incorrect
DStatement I is incorrect but Statement II is correct
Correct answer: (A) Both Statement I and Statement II are correct
Explanation
Both statements are correct, describing two well-established water-treatment practices.
Statement 1 is correct, as chlorine is a cheap, widely used disinfectant that kills pathogens.
Statement 2 is correct, since optimum fluoride in drinking water strengthens teeth against decay.
Chlorination guards against waterborne diseases like cholera and typhoid.
Excess fluoride, however, causes dental and skeletal fluorosis.
Both dosing levels are therefore carefully regulated.
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