JEE Main 202124 FebruaryEvening Shift
- Exam
- JEE Main
- Year
- 2021
- Date
- 24 February
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Environmental Chemistry
JEE Main 2021 · 24 February · Evening Shift · Chemistry · Environmental Chemistry
Given below are two statements: Statement I: The value of the...
Given below are two statements:
Statement I: The value of the parameter "Biochemical Oxygen Demand (BOD)" is important for survival of aquatic life.
Statement II: The optimum value of BOD is
In the light of the above statements, choose the most appropriate answer from the options given below:
Options
- AStatement I is true but Statement II is false
- BStatement I is false but Statement II is true
- CBoth Statement I and Statement II are false
- DBoth Statement I and Statement II are true
Correct answer
A. Statement I is true but Statement II is false
Step-by-step solution
Clean water would have BOD value of less than 5 ppm whereas highly polluted water could have a BOD value of or more.
For survival of aquatic life dissolved oxygen is responsible its optimum limit and optimum limit of BOD ranges from & BOD stands for biochemical oxygen demand.