(A) The correct matches are as follows: $A. Pb > 50 \ ppb$ leads to $I. \text{Liver damage}$. $B. SO_4^{2-} > 500 \ ppm$ leads to $II. \text{L

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(A) The correct matches are as follows: $A. Pb > 50 \ ppb$ leads to $I. \text{Liver damage}$. $B. SO_4^{2-} > 500 \ ppm$ leads to $II. \text{Laxative effect}$. $C. NO_3^{-} > 50 \ ppm$ leads to $III. \text{Blue baby syndrome}$. $D. F^{-} > 2 \ ppm$ leads to $IV. \text{Brown mottling of teeth}$. Therefore,the correct sequence is $A-I, B-II, C-III, D-IV$.

Class 11 Chemistry Environmental Chemistry Environmental Study

Easy

Match the following:

List-$I$ (Pollutant concentration limit in water) List-$II$ (Effect)

$A. Pb > 50 \ ppb$ $I. \text{Liver damage}$

$B. SO_4^{2-} > 500 \ ppm$ $II. \text{Laxative effect}$

$C. NO_3^{-} > 50 \ ppm$ $III. \text{Blue baby syndrome}$

$D. F^{-} > 2 \ ppm$ $IV. \text{Brown mottling of teeth}$

The correct answer is

List-$I$ (Pollutant concentration limit in water)	List-$II$ (Effect)
$A. Pb > 50 \ ppb$	$I. \text{Liver damage}$
$B. SO_4^{2-} > 500 \ ppm$	$II. \text{Laxative effect}$
$C. NO_3^{-} > 50 \ ppm$	$III. \text{Blue baby syndrome}$
$D. F^{-} > 2 \ ppm$	$IV. \text{Brown mottling of teeth}$