JEE-MAIN SERIES Chemistry
Water Pollution
5 previous year questions.
Volume: 5 Ques
Yield: Medium
High-Yield Trend
1
2023 2
2022 1
2019 1
2016 Chapter Questions 5 MCQs
01
PYQ 2016
medium
chemistry ID: jee-main
The concentration of fluoride, lead, nitrate and iron in a water sample from an underground lake was found to be , , and , respectively. This water is unsuitable for drinking due to high concentration of :
1
Fluoride
2
Lead
3
Nitrate
4
Iron
02
PYQ 2019
medium
chemistry ID: jee-main
The concentration of dissolved oxygen in cold water can go upto :
1
10 ppm
2
14 ppm
3
16 ppm
4
8 ppm
03
PYQ 2022
medium
chemistry ID: jee-main
The eutrophication of water body results in:
1
loss of Biodiversity.
2
breakdown of organic matter.
3
increase in biodiversity.
4
decrease in BOD.
04
PYQ 2022
medium
chemistry ID: jee-main
Given below are two statements :
Statement I: In polluted water values of both dissolved oxygen and BOD are very low.
Statement II: Eutrophication results in decrease in the amount of dissolved oxygen.
In the light of the above statements, choose the most appropriate answer from the options given below :
Statement I: In polluted water values of both dissolved oxygen and BOD are very low.
Statement II: Eutrophication results in decrease in the amount of dissolved oxygen.
In the light of the above statements, choose the most appropriate answer from the options given below :
1
Both Statement I and Statement II are true.
2
Both Statement I and Statement II are false.
3
Statement I is true but Statement II is false.
4
Statement I is false but Statement II is true.
05
PYQ 2023
medium
chemistry ID: jee-main
The water quality of a pond was analysed and its BOD was found to be 4. The pond has
1
Water has high amount of fluoride compounds
2
Highly polluted water
3
Very clean water
4
Slightly polluted water
About Water Pollution - JEE-MAIN
Water Pollution is a vital chapter for JEE-MAIN aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.
By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.
Frequently Asked Questions
Why focus on Water Pollution PYQs?
Analyzing PYQs for this specific chapter reveals the most frequently tested concepts and the typical complexity of questions, allowing you to tailor your study plan efficiently.
How to best use this analysis?
Review the topic breakdown to see which sub-topics within Water Pollution carry the most weight. Then, tackle the questions iteratively to solidify your understanding.