Water samples with BOD values of 4 ppm and 1 | vedclass

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Question

(C) The $BOD$ (Biochemical Oxygen Demand) value is a measure of the amount of dissolved oxygen required by bacteria to decompose organic matter in wat

Vedclass · Accepted Answer

Clean and highly polluted

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(C) The $BOD$ (Biochemical Oxygen Demand) value is a measure of the amount of dissolved oxygen required by bacteria to decompose organic matter in water. Clean water typically has a $BOD$ value of less than $5 \ ppm$. Highly polluted water typically has a $BOD$ value of $17 \ ppm$ or more. Therefore,a water sample with $4 \ ppm$ is considered clean,and a water sample with $18 \ ppm$ is considered highly polluted.

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

Water samples with $BOD$ values of $4 \ ppm$ and $18 \ ppm$ respectively are:

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Match List-$I$ with List-$II$

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

Choose the correct answer from the options given below:

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