Question:
The BOD of highly polluted water is
The BOD of highly polluted water is
Show Hint
Higher BOD means higher organic pollution in water. Clean water has low BOD, while highly polluted water has high BOD.
Updated On: May 7, 2026
- \(17\ \text{ppm}\)
- \(10\ \text{ppm}\)
- \(8\ \text{ppm}\)
- \(12\ \text{ppm}\)
Show Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Concept:
BOD stands for Biochemical Oxygen Demand. It is the amount of dissolved oxygen required by microorganisms to decompose organic matter present in water.
Step 1: Clean water has low BOD because it contains less organic waste.
Step 2: Polluted water contains more organic matter.
Step 3: More organic matter means microorganisms require more oxygen for decomposition.
Step 4: Therefore, highly polluted water has a high BOD value. Among the given options, the highest value is: \[ 17\ \text{ppm} \] So the BOD of highly polluted water is: \[ \boxed{17\ \text{ppm}} \]
Step 1: Clean water has low BOD because it contains less organic waste.
Step 2: Polluted water contains more organic matter.
Step 3: More organic matter means microorganisms require more oxygen for decomposition.
Step 4: Therefore, highly polluted water has a high BOD value. Among the given options, the highest value is: \[ 17\ \text{ppm} \] So the BOD of highly polluted water is: \[ \boxed{17\ \text{ppm}} \]
Was this answer helpful?
0
0
Top AP ECET Chemistry Questions
- Thermal decomposition of $HCOOH$ is a first order reaction and the rate constant at T(K) is $4.606 \times 10^{-3}\, s^{-1}$. The time required to decompose $90\%$ of initial quantity of $HCOOH$ at $T(K)$ in seconds is
- To which group and period does the element belong if the electronic configuration of an element in its $-2$ oxidation state is $1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6}$ ?
- A solution is prepared by dissolving $10 \,g$ of a non-volatile solute (molar mass, $'M^{\prime} g mol ^{-1}$ ) in $360\, g$ of water. What is the molar mass in $g\, mol ^{-1}$ of solute if the relative lowering of vapour pressure of solution is $5 \times 10^{-3}$ ?
- Reduction of nitrobenzene in the presence of $ \text{Zn/N}{{\text{H}}_{\text{4}}}\text{Cl} $ gives:
- Magnesium is burnt in air to form $A$ and $B$. When $B$ is hydrolysed, $C$ and $D$ are formed. $D$ is the reactant in the manufacture of nitric acid by Ostwald's process. What is $C$
View More Questions
Top AP ECET Questions
- The sum of the four digit even numbers that can be formed with the digits 0,3,5,4 with out repetition is
- Thermal decomposition of $HCOOH$ is a first order reaction and the rate constant at T(K) is $4.606 \times 10^{-3}\, s^{-1}$. The time required to decompose $90\%$ of initial quantity of $HCOOH$ at $T(K)$ in seconds is
- Three rods of same dimensions have thermal conductivities 3 K, 2 K and K. They are arranged as shown below:What will be the temperature T of the junction?
- To which group and period does the element belong if the electronic configuration of an element in its $-2$ oxidation state is $1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6}$ ?
- A ball of mass 0.6 kg attached to a light inextensible string rotates in a vertical circle of radius 0.75 m such that it has a speed of $ 5\text{ }m{{s}^{-1}} $ when the string is horizontal. Tension in string when it h horizontal on other side is $ (g=10m{{s}^{-}}2) $
View More Questions