Question

Match the upper limit concentration of the pollutants given in column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	Lead	(i)	500 ppm
(B)	Sulphate	(ii)	10 ppm
(C)	Nitrate	(iii)	50 ppb
(D)	Fluoride	(iv)	50 ppm

• A. (A) $\to$ (ii), (B) $\to$ (iii), (C) $\to$ (i), (D) $\to$ (iv)
• B. (A) $\to$ (iii), (B) $\to$ (i), (C) $\to$ (iv), (D) $\to$ (ii)
• C. (A) $\to$ (i), (B) $\to$ (iv), (C) $\to$ (iii), (D) $\to$ (ii)
• D. (A) $\to$ (iv), (B) $\to$ (ii), (C) $\to$ (iii), (D) $\to$ (i)

Answer 1

The correct option is B (A) $\to$ (iii), (B) $\to$ (i), (C) $\to$ (iv), (D) $\to$ (ii)

The concentration of pollutants like lead is 50 ppb. So the water gets contaminated with lead. The concentration of sulphate is 500 ppm. The concentration of nitrate is 50 ppm. Concentration of fluoride is 10 ppm.