JEE Main 2022 · 28 Jul · Shift 1 · Water Pollution
The metal salts formed during softening of hardwater using Clark's method are :
- (A) and
- (B) and
- (C) and
- (D) and
Show answerHide answer
Answer: (B)
Environmental Chemistry JEE Main PYQs PDF, 2020–2023
This chapter was removed from the JEE Main syllabus in 2024. These are older PYQs. See what changed →
Environmental Chemistry has 82 questions in JEE Main papers from 2020 to 2023, about 21 per year across all shifts. The free PDF has 16 of them, each with its answer. The most asked topic is Air Pollution (52 questions), followed by Water Pollution (27) and Soil Pollution (3).
- Asked in JEE Main
- 822020–2023, all shifts
- In this free PDF
- 16with answers
- Asked in 2023
- 25Latest paper: 2023 Apr S1
- Most asked topic
- Air Pollution52 Qs · 63% of the chapter
- Difficulty mix
- 94% easy · 6% mediumof the questions in the PDF
Answer key includedNo loginPractise online
Source: official NTA JEE Main papers · Updated
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How often it's asked in JEE Main
Environmental Chemistry was removed from the JEE Main syllabus in 2024. It had about 0.9 questions per shift in 2020–22 and none since.
It did not come up in the 2024–26 shifts in our bank. All its questions in 2020–2026 were MCQs (about 82).
How many questions from Environmental Chemistry in JEE Main, year by year
| Year | Questions | Per shift | MCQ | Numerical |
|---|---|---|---|---|
| 2026 | 0 | 0 | 0 | 0 |
| 2025 | 0 | 0 | 0 | 0 |
| 2024 | 0 | 0 | 0 | 0 |
| 2023 | 25 | 1.0 | 25 | 0 |
| 2022 | 21 | 0.9 | 21 | 0 |
| 2021 | 26 | 1.0 | 26 | 0 |
| 2020 | 10 | 0.6 | 10 | 0 |
| 2020–2026 | 82 | 0.6 | 82 | 0 |
Most asked Environmental Chemistry topics, 2020–2026
| Topic | Questions |
|---|---|
| Air Pollution | 52 |
| Water Pollution | 27 |
| Soil Pollution | 3 |
Counted from PrepWiser's question bank of JEE Main papers, 2020–2026. Per shift = questions that year ÷ shifts in our bank. Updated .
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The link opens this page: the free PDF with 16 questions and answers, and online practice. Nobody needs to log in.
Environmental Chemistry questions per year
| Year | Asked | In PDF | |
|---|---|---|---|
| 2023 | 25 | 4 | |
| 2022 | 21 | 6 | |
| 2021 | 26 | 4 | |
| 2020 | 10 | 2 |
in the free PDF asked, not in the PDFThe PDF only has questions we can print in full with a checked answer, so it holds 16 of the 82 asked.
Topic-wise weightage by year
How many Environmental Chemistry questions each topic had in every JEE Main year (all shifts), counting every question asked, including ones not in the PDF. Darker cells mean more questions.
| Topic | Asked | Share | 2023 | 2022 | 2021 | 2020 |
|---|---|---|---|---|---|---|
| Air Pollution | 52 | 63% | 19 | 10 | 17 | 6 |
| Water Pollution | 27 | 33% | 5 | 9 | 9 | 4 |
| Soil Pollution | 3 | 4% | 1 | 2 | · | · |
| All topics | 82 | 100% | 25 | 21 | 26 | 10 |
Swipe the table sideways for older years.
Newest questions (2023)
All 4 JEE Main 2023 Environmental Chemistry questions in the free PDF, latest shift first. The 2023 papers asked 25 in all.
-
JEE Main 2023 · 13 Apr · Shift 1 · Water Pollution
Solve it online →Given below are two statements :
Statement I : Permutit process is more efficient compared to the synthetic resin method for the softening of water.
Statement II : Synthetic resin method results in the formation of soluble sodium salts.
In the light of the above statements, choose the most appropriate answer from the options given below:
-
JEE Main 2023 · 6 Apr · Shift 2 · Soil Pollution
Solve it online →The group of chemicals used as pesticide is :
-
JEE Main 2023 · 31 Jan · Shift 2 · Air Pollution
The normal rain water is slightly acidic and its value is because of which one of the following?Solve it online → -
JEE Main 2023 · 25 Jan · Shift 2 · Air Pollution
Solve it online →A. Ammonium salts produce haze in atmosphere.
B. Ozone gets produced when atmospheric oxygen reacts with chlorine radicals.
C. Polychlorinated biphenyls act as cleansing solvents.
D. 'Blue baby' syndrome occurs due to the presence of excess of sulphate ions in water.
Choose the correct answer from the options given below :
Sample questions from recent papers
JEE Main 2022 · 29 Jun · Shift 2 · Air Pollution
Sulphur dioxide is one of the components of polluted air. SO2 is also a major contributor to acid rain. The correct and complete reaction to represent acid rain caused by SO2 is :
- (A)2SO2 + O2 2SO3
- (B)SO2 + O3 SO3 + O2
- (C)SO2 + H2O2 H2SO4
- (D)2SO2 + O2 + 2H2O 2H2SO4
Show answerHide answer
Answer: (D)
JEE Main 2022 · 28 Jun · Shift 1 · Soil Pollution
Which amongst the following is not a pesticide?
- (A)DDT
- (B)Organophosphates
- (C)Dieldrin
- (D)Sodium arsenite
Show answerHide answer
Answer: (D)
The free PDF above has all 16 questions grouped by topic, with an answer key.
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Answer Environmental Chemistry PYQs in the browser, get each one checked instantly and open the step-by-step solution where there is one.
Practise Environmental Chemistry onlineFrequently asked
How many questions come from Environmental Chemistry in JEE Main?
82 questions from 2020 to 2023, about 21 per year. In 2023 it had 25. The free PDF has 16 of them.
Which Environmental Chemistry topics are most important for JEE Main?
By past papers: Air Pollution (63%), Water Pollution (33%) and Soil Pollution (4%) of all Environmental Chemistry questions.
Is the Environmental Chemistry PYQ PDF free?
Yes. The PDF and its answer key are free, and you can practise the questions online with no login, with step-by-step solutions where available.
Prefer to solve online? Practise Environmental Chemistry online with step-by-step solutions where available, or work through JEE Main papers shift by shift.
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JEE Main PYQs by year: 2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020
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