This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 49 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 49 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which pollutants cause ozone layer depletion? A) Carbon dioxide. B) Chlorofluorocarbons (CFCs). C) Methane. D) Nitrogen. Show Answer Correct Answer: B) Chlorofluorocarbons (CFCs). 2. What is the main principle of cleaner production? A) Ozone Depletion. B) Carbon Footprint. C) Greenhouse Effect. D) Atom Economy. Show Answer Correct Answer: D) Atom Economy. 3. Forest soil recovery after acid rain requires: A) Re-liming and reforestation. B) Fire clearing. C) All the above. D) None of the above. Show Answer Correct Answer: A) Re-liming and reforestation. 4. Why might a lake that appears clear still be unsafe? A) Clear lakes never contain microorganisms. B) Polluted lakes can appear clear but cannot support life due to factors like acid rain or harmful chemicals. C) Clarity always indicates high dissolved oxygen. D) Clear water has neutral pH by definition. Show Answer Correct Answer: B) Polluted lakes can appear clear but cannot support life due to factors like acid rain or harmful chemicals. 5. Animals without backbones A) Invertebrates. B) Devertibrated. C) Vertebrates. D) Micro-organism. Show Answer Correct Answer: A) Invertebrates. 6. How does climate change affect sea levels? A) Climate change causes sea levels to rise due to melting ice and thermal expansion of water. B) Sea levels decrease due to increased rainfall from climate change. C) Climate change causes sea levels to rise only in polar regions. D) Climate change has no effect on sea levels. Show Answer Correct Answer: A) Climate change causes sea levels to rise due to melting ice and thermal expansion of water. 7. The increase of concentration of a chemical or elements as it moves up the food chain ..... A) Bioremediation. B) Biomagnification. C) Phytoremediation. D) Photolysis. Show Answer Correct Answer: B) Biomagnification. 8. A substance with a high number of hydronium ions when dissolved in water A) Acid. B) Base. C) Salt. D) Neutral compound. Show Answer Correct Answer: A) Acid. 9. Which of the following is an effect of global warming? A) Flooding of low lying coastal land. B) Longer days in the summer. C) Longer days in the summer. D) None of the above. Show Answer Correct Answer: A) Flooding of low lying coastal land. 10. Nutrients are classified into two major groups, A) Organic and inorganic. B) Lipids and enzymes. C) Vitamins and minerals. D) Macrominerals and trace elements. Show Answer Correct Answer: A) Organic and inorganic. 11. Which of the following pollutants contributes to the formation of smog? A) Oxygen. B) Nitrogen oxides. C) Helium. D) Hydrogen. Show Answer Correct Answer: B) Nitrogen oxides. 12. Which among the following is NOT a constituent of photochemical smog? A) Formaldehyde. B) Acrolein. C) Peroxyacetyl nitrate (PAN). D) SO$_{2}$. Show Answer Correct Answer: D) SO$_{2}$. 13. Carbohydrates provide the body with ..... ? A) Water. B) Dietary fibre. C) Sweetness. D) Energy. Show Answer Correct Answer: D) Energy. 14. According to the pH scale information, which statement is correct? A) Acids have pH greater than 7; bases have pH less than 7. B) Neutral solutions have pH of 7; acids are below 7 and bases are above 7. C) Neutral solutions have pH 0; acids and bases both center around pH 14. D) Every single pH unit change represents a twofold change in acidity or basicity. Show Answer Correct Answer: B) Neutral solutions have pH of 7; acids are below 7 and bases are above 7. 15. How does runoff from fertilizers and other pollutants affect our water supply? A) It improves water quality by adding nutrients. B) It has no effect on water quality. C) It contaminates water with harmful chemicals. D) It increases the water supply. Show Answer Correct Answer: C) It contaminates water with harmful chemicals. 16. Which air pollutants are monitored because they can cause smog and acid rain? A) Carbon monoxide and methane. B) Sulfur dioxide and nitrogen oxides. C) Ozone and helium. D) Water vapor and argon. Show Answer Correct Answer: B) Sulfur dioxide and nitrogen oxides. 17. Building erosion from acid rain leads to: A) Structural weakening. B) Increased stability. C) Waterproofing. D) Resistance to wind. Show Answer Correct Answer: A) Structural weakening. 18. Which of these materials is often recycled? A) Sand. B) Coal. C) Aluminium. D) Wood ash. Show Answer Correct Answer: C) Aluminium. 19. Which of the following can help reduce air pollution? A) Increasing deforestation. B) Using catalytic converters in vehicles. C) Burning more fossil fuels. D) Increasing industrial emissions. Show Answer Correct Answer: B) Using catalytic converters in vehicles. 20. What is fertilizer labeled with? A) 5 Numbers. B) 3 Numbers. C) 2 Numbers. D) Nothing. Show Answer Correct Answer: B) 3 Numbers. 21. What do herbicides specifically target? A) Fungi. B) Weeds. C) Insects. D) Bacteria. Show Answer Correct Answer: B) Weeds. 22. How would the planet be without the greenhouse effect A) It's to hot out side. B) There would be a big climate change and global warning. C) Without the greenhouse effect earths average temperature would be-18 and covered in ice. D) You are my fire. Show Answer Correct Answer: C) Without the greenhouse effect earths average temperature would be-18 and covered in ice. 23. Which is the highest concentration of lead? A) 5 ppm. B) 0.5 ppm. C) 5 ppb. D) 0.5 ppb. Show Answer Correct Answer: A) 5 ppm. 24. Immediate or short-term harm effects after a single exposure or short period of exposure is called ..... A) Acute Toxicity. B) Chronic Toxicity. C) Diluted Toxicity. D) Accumulated Toxicity. Show Answer Correct Answer: A) Acute Toxicity. 25. Which layer of the atmosphere has the highest temperatures? A) Troposphere. B) Stratosphere. C) Thermosphere. D) Exosphere. Show Answer Correct Answer: C) Thermosphere. ← PreviousNext →Related QuizzesClass 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 1Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 2Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 3Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 4Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 5Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 6Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 7Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 8Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 9Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books