Relevant Titles
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CBSE Class 11 Chemistry – Pollution Control Measures MCQs with Answers
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Online Practice Test: Pollution Control Measures (Environmental Chemistry)
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CBSE Class 11 Chemistry Quiz – Air, Water & Industrial Pollution Control
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NCERT-Based Class 11 Chemistry MCQs on Environmental Pollution Control
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Free Online Test: Pollution Control Measures for CBSE Class 11 Students
✅ Introduction Paragraph
Prepare effectively for your CBSE Class 11 Chemistry exam with this online MCQ practice test focused on Pollution Control Measures — a crucial topic from Chapter 14: Environmental Chemistry (Part C – Organic Chemistry). These questions are crafted strictly according to the NCERT Class 11 syllabus, ensuring complete exam relevance and conceptual clarity.
This section explores real-world applications of chemistry in controlling environmental pollution, including air, water, and soil pollution control technologies. Students will learn about electrostatic precipitators, scrubbers, catalytic converters, and waste treatment processes that help minimize environmental damage.
Each multiple-choice question comes with instant feedback, explanations, and scoring, allowing learners to test and improve their understanding in a 30-minute self-assessment quiz. Whether you’re preparing for CBSE board exams or competitive entrance tests, this quiz helps strengthen key concepts while promoting environmental awareness and sustainable chemical practices.
✅ Sample MCQs (with Answers and Explanations)
Q1. Which device removes particulate matter from industrial emissions using electrostatic charge?
A) Cyclone separator
B) Bag filter
C) Electrostatic precipitator
D) Scrubber
Answer: C
Explanation: Electrostatic precipitators collect fine particles using electrostatic forces, effectively reducing industrial air pollution.
Q2. What is the main function of a scrubber in air pollution control?
A) To absorb gaseous pollutants like SO₂
B) To filter dust only
C) To increase air temperature
D) To generate CO₂
Answer: A
Explanation: Scrubbers use a liquid spray to absorb or neutralize harmful gases such as sulfur dioxide (SO₂).
Q3. Which treatment stage primarily reduces organic matter in wastewater?
A) Screening
B) Secondary (biological) treatment
C) Primary sedimentation
D) Tertiary polishing
Answer: B
Explanation: Secondary treatment uses aerobic microbes to break down organic matter, reducing BOD (Biochemical Oxygen Demand).
Q4. What does a catalytic converter in vehicles do?
A) Converts CO and NOₓ into less harmful gases
B) Adds oxygen to fuel
C) Removes lead from fuel
D) Emits hydrocarbons
Answer: A
Explanation: Catalytic converters reduce air pollution by converting toxic gases like CO and NOₓ into CO₂ and N₂.
Q5. Which process is used to remove sulfur dioxide from flue gases?
A) Electrostatic precipitation
B) Flue gas desulfurization (FGD)
C) Sedimentation
D) Ozonation
Answer: B
Explanation: FGD removes SO₂ by passing flue gases through a slurry of limestone or lime, forming gypsum as a by-product.