When does the $BOD$ (Biochemical Oxygen Demand) decrease?

  • A
    When the amount of organic matter is consumed.
  • B
    When organic matter increases.
  • C
    When the volume of water decreases.
  • D
    When the amount of oxygen increases.

Explore More

Similar Questions

The concentration of a pesticide required to destroy $50\%$ of a pest population is called:

$A$: Water hyacinth is one of the most invasive weeds.
$R$: It increases the dissolved oxygen of water.

What is the warning concentration of lead $(Pb)$ in the blood?

Compare the lifestyle of people living in urban areas with those in rural areas and briefly describe how the lifestyle affects their health.

Difficult
View Solution

Which one of the following represents natural pollutants?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo