Which of the following industries produce phenolic compounds and suspended solids as waste?
- APetroleum
- BPaper and pulp
- CSugar
- DDetergent
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Highly polluted water could have a $BOD$ value of: (in $ppm$)
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| List-$I$ | List-$II$ |
| $(A)$ Burning sulfur-containing waste releases gases into the atmosphere. | $(1)$ Water pollution |
| $(B)$ Use of carbonates as pesticides | $(2)$ Photochemical smog,damage to plant life,corrosion of buildings,respiratory problems,water pollution. |
| $(C)$ Using synthetic detergents for washing clothes | $(3)$ Damage to the ozone layer |
| $(D)$ Releasing smoke from vehicles and factories into the atmosphere. | $(4)$ Neurological disorders in humans. |
| $(E)$ Using chlorofluorocarbon compounds to clean computer parts. | $(5)$ Classical smog,acid rain,water pollution,respiratory problems,damage to buildings,metal corrosion. |
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List-$I$ (Species) List-$II$ (Maximum allowed concentration in ppm in drinking water) $A$. $F^{-}$ $I$. $< 50 \, ppm$ $B$. $SO_{4}^{2-}$ $II$. $< 5 \, ppm$ $C$. $NO_{3}^{-}$ $III$. $< 2 \, ppm$ $D$. $Zn$ $IV$. $< 500 \, ppm$
| List-$I$ (Species) | List-$II$ (Maximum allowed concentration in ppm in drinking water) |
| $A$. $F^{-}$ | $I$. $< 50 \, ppm$ |
| $B$. $SO_{4}^{2-}$ | $II$. $< 5 \, ppm$ |
| $C$. $NO_{3}^{-}$ | $III$. $< 2 \, ppm$ |
| $D$. $Zn$ | $IV$. $< 500 \, ppm$ |
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