JEE Main Chemistry · Environmental Chemistry
Water Quality BOD and COD
Water Quality BOD and COD (Environmental Chemistry) was asked 2 times in 2 JEE Main shifts, 2020–2023, out of the 42 shifts Lumi analysed.
- Times asked
- 2
- in 2 shifts
- Years
- 2020–2023
- Usual format
- Single correct
- Recall
- Pattern
- Occasional
- repeats across shifts
How it is asked
- Statement i/ii on water quality parameters
- Definition recall
Difficulty
Easy 1Medium 1Hard 0
Where it sits
Chapter: Environmental Chemistry. Topic: Environmental Chemistry, 16 questions over 9 ideas.
Other repeat ideas in this topic
Every time it came
All 2 questions
Newest first, each with its options and official answer.
- 11 Apr 2023, Shift 1 · Q71Given below are two statements: Statement I: If BOD is 4 ppm and dissolved oxygen is 8 ppm, then it is a good quality water. Statement II:…MediumTwo statements
- 9 Jan 2020, Shift 2 · Q38Biochemical Oxygen Demand (BOD) is the amount of oxygen required (in ppm) :EasySingle correct