The concentration of dissolved oxygen in wate | vedclass

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(A) For the healthy growth of fish,the concentration of dissolved oxygen $(DO)$ in water should be more than $6 \ ppm$. If the concentration of dissol

Vedclass · Accepted Answer

$X=6, Y=5$

Vedclass · Answer

(A) For the healthy growth of fish,the concentration of dissolved oxygen $(DO)$ in water should be more than $6 \ ppm$. If the concentration of dissolved oxygen is less than $6 \ ppm$,the growth of fish is inhibited. Biochemical Oxygen Demand $(BOD)$ is the amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water. Clean water would have a $BOD$ value of less than $5 \ ppm$. Therefore,$X = 6$ and $Y = 5$.

List-$I$ Industry	List-$II$ Waste Generated
$A$. Steel plants	$I$. Gypsum
$B$. Thermal power plants	$II$. Fly ash
$C$. Fertilizer industries	$III$. Slag
$D$. Paper mills	$IV$. Bio-degradable Wastes

The concentration of dissolved oxygen in water for the growth of fish should be more than $X \ ppm$ and the Biochemical Oxygen Demand $(BOD)$ in clean water should be less than $Y \ ppm$. $X$ and $Y$ in $ppm$ are,respectively:

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List-$I$ Industry List-$II$ Waste Generated

$A$. Steel plants $I$. Gypsum

$B$. Thermal power plants $II$. Fly ash

$C$. Fertilizer industries $III$. Slag

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