Multiple Choice Questions (MCQs) for JEE Chemistry: Environmental Chemistry
Review structured MCQ sets for JEE Chemistry Environmental Chemistry. Built according to official JEE guidelines, these downloadable questions support daily revision and core concept reinforcement.
Practice Environmental Chemistry MCQs for JEE Chemistry
Navigate directly to the 50 objective questions for Environmental Chemistry using the digital viewer below. Each practice set includes verified answer keys, allowing students to instantly cross-check their work and identify areas requiring further revision.
Multiple Choice Questions
(a) Troposphere
(b) Stratosphere
(c) Biosphere
(d) Exosphere
Show Answer & Explanation
Answer: (a) Troposphere
Explanation:
1. The troposphere is the lowest layer, extending to about 10 km, where weather occurs and where life exists.
2. Answer: (a)
Teacher's Note:
1. Link each biomolecule with its structure and characteristic reaction; most questions here are direct recall of these links.
(a) It protects from harmful UV radiation
(b) It protects from infrared radiation
(c) It maintains the temperature of earth at an optimum level
(d) It reduces poisonous gases to non-poisonous gases
Show Answer & Explanation
Answer: (a) It protects from harmful UV radiation
Explanation:
1. The ozone layer absorbs the harmful UV radiation of the sun.
2. Answer: (a)
Teacher's Note:
1. Link each biomolecule with its structure and characteristic reaction; most questions here are direct recall of these links.
(a) A non-biodegradable pollutant
(b) A greenhouse gas
(c) A fertilizer
(d) A biodegradable pollutant
Show Answer & Explanation
Answer: (a) A non-biodegradable pollutant
Explanation:
1. DDT is not broken down by microbes and accumulates in food chains (biomagnification).
2. Answer: (a)
Teacher's Note:
1. Link each biomolecule with its structure and characteristic reaction; most questions here are direct recall of these links.
(a) CH4
(b) O3
(c) CO
(d) H2O vapour
Show Answer & Explanation
Answer: (c) CO
Explanation:
1. CH4, O3 and water vapour absorb infrared radiation and are greenhouse gases.
2. CO is a poison but is not counted as a greenhouse gas.
3. Answer: (c)
Teacher's Note:
1. Link each biomolecule with its structure and characteristic reaction; most questions here are direct recall of these links.
(a) Sulphur dioxide
(b) Hydrogen sulphide
(c) Chlorine
(d) Carbon dioxide
Show Answer & Explanation
Answer: (a) Sulphur dioxide
Explanation:
1. SO2 from the Mathura refinery forms acid rain, which attacks the marble (CaCO3).
2. Answer: (a)
Teacher's Note:
1. Link each biomolecule with its structure and characteristic reaction; most questions here are direct recall of these links.
(a) Polluted water
(b) Less polluted water
(c) Pure water
(d) Highly polluted water
Show Answer & Explanation
Answer: (d) Highly polluted water
Explanation:
1. Clean water has BOD below 5 ppm.
2. A value of 20 ppm shows a large amount of biodegradable organic matter, so the water is highly polluted.
3. Answer: (d)
Teacher's Note:
1. Link each biomolecule with its structure and characteristic reaction; most questions here are direct recall of these links.
(a) Ozone can oxidise sulphur dioxide present in the atmosphere to sulphur trioxide
(b) Chlorofluorocarbons are supposed to be the main cause of ozone layer depletion
(c) Ozone is produced in the upper stratosphere by the action of UV rays
(d) Ozone is not responsible for the greenhouse effect
Show Answer & Explanation
Answer: (d) Ozone is not responsible for the greenhouse effect
Explanation:
1. Ozone does absorb infrared radiation, so it is a greenhouse gas.
2. The other three statements are correct.
3. Answer: (d)
Teacher's Note:
1. Link each biomolecule with its structure and characteristic reaction; most questions here are direct recall of these links.
Free study material for Chemistry
Environmental Chemistry Objective Questions & Solutions for JEE Chemistry
Chapter MCQs with Answers for JEE Chemistry
Test your conceptual understanding of Environmental Chemistry with these targeted multiple-choice questions. Designed in alignment with the latest JEE curriculum for JEE Chemistry, these problem sets build accuracy and prepare students for objective exams.
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FAQs
You can get most exhaustive JEE Chemistry Environmental Chemistry MCQs Set 19 for free on StudiesToday.com. These MCQs for JEE Chemistry are updated for the 2026-27 academic session as per JEE examination standards.
Yes, our JEE Chemistry Environmental Chemistry MCQs Set 19 include the latest type of questions, such as Assertion-Reasoning and Case-based MCQs. 50% of the JEE paper is now competency-based.
By solving our JEE Chemistry Environmental Chemistry MCQs Set 19, JEE students can improve their accuracy and speed which is important as objective questions provide a chance to secure 100% marks in the Chemistry.
Yes, Chemistry MCQs for JEE have answer key and brief explanations to help students understand logic behind the correct option as its important for 2026 competency-focused JEE exams.
Yes, you can also access online interactive tests for JEE Chemistry Environmental Chemistry MCQs Set 19 on StudiesToday.com as they provide instant answers and score to help you track your progress in Chemistry.