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NEET UG CHEMISTRY MCQ: ENVIRONMENTAL CHEMISTRY
1
Hard
1 of 1
Understanding
+4 | -1
Which of the following statements are not correct?
(i) ion concentration above 2ppm causes brown
mottling in teeth.
(ii) Excessive
(over 10 ppm) causes harmful effect to
bones and teeth.
(iii) Excessive lead in drinking water causes disease
methemoglobinemia
(iv) Deficiency of sulphate in drinking water causes
laxative effect.
(i) ion concentration above 2ppm causes brown
mottling in teeth.
(ii) Excessive
(over 10 ppm) causes harmful effect to
bones and teeth.
(iii) Excessive lead in drinking water causes disease
methemoglobinemia
(iv) Deficiency of sulphate in drinking water causes
laxative effect.
View answer and explanation
Correct option: D
(iii) and (iv)
Option D ((iii) and (iv)) is correct because statements (iii) and (iv) are incorrect regarding the effects of lead and sulphate in drinking water.
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