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) |
|---|---|
| $A. Pb > 50 \ ppb$ | $I. \text{Liver damage}$ |
| $B. SO_4^{2-} > 500 \ ppm$ | $II. \text{Laxative effect}$ |
| $C. NO_3^{-} > 50 \ ppm$ | $III. \text{Blue baby syndrome}$ |
| $D. F^{-} > 2 \ ppm$ | $IV. \text{Brown mottling of teeth}$ |
- A$A-I, B-II, C-III, D-IV$
- B$A-I, B-II, C-IV, D-III$
- C$A-II, B-I, C-III, D-IV$
- D$A-III, B-II, C-I, D-IV$
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$b$) Oxidation of ethene in the presence of $Pd^{2+}$ catalyst in aqueous medium gives acetic acid
$c$) Photochemical smog causes damage to plant life
$d$) Reducing smog is a mixture of smoke,fog and $SO_2$
The incorrect statement from the following is:
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