This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 40 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 40 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The presence of a species of large trout in a particular lake indicates a A) High dissolved oxygen concentration. B) Low dissolved oxygen concentration. C) High water temperature. D) Low water temperature. Show Answer Correct Answer: A) High dissolved oxygen concentration. 2. Hard water is water that: A) Boils at a higher temperature. B) Does not easily form a lather with soap. C) Contains chlorine. D) Contains fluoride. Show Answer Correct Answer: B) Does not easily form a lather with soap. 3. The final step of the water treatment process is ..... A) Coagulation. B) Disinfection. C) Filtration. D) Sedimentation. E) Flocculation. Show Answer Correct Answer: B) Disinfection. 4. The natural chemical or physical processes that breaks down rock on Earth's surface. A) Weathering. B) Erosion. C) Deposition. D) Jackhammering. Show Answer Correct Answer: A) Weathering. 5. In a closed thermodynamic system, what can be exchanged with the surroundings? A) Matter only. B) Energy only. C) Both matter and energy. D) Neither matter nor energy. Show Answer Correct Answer: B) Energy only. 6. The reaction, H2O + hv $\rightarrow$ HO* + H, represents A) The formation of hydroxyl radical at higher altitudes. B) Formation of the hydroxyl radical in the relatively unpolluted troposphere. C) The strong reactivity of the hydroxyl radical. D) Destruction of the hydroxyl radical at higher altitudes. Show Answer Correct Answer: A) The formation of hydroxyl radical at higher altitudes. 7. Pollution is described as which of the following? A) The passive movement of molecules from high to low concentration. B) Any harmful change to the environment caused naturally or by human activities. C) The process by which bacteria convert nitrogen gas into usable compounds for plants. D) The chemical breakdown of a compound due to reaction with water. Show Answer Correct Answer: B) Any harmful change to the environment caused naturally or by human activities. 8. The mineral most crucial to red blood cells is A) Iron. B) Copper. C) Iodine. D) Calcium. Show Answer Correct Answer: A) Iron. 9. Which statement best defines pollution? A) Any natural change in weather patterns. B) Harmful changes to air, water, or soil. C) The safe breakdown of substances by living things. D) The process of using plants to clean contaminants. Show Answer Correct Answer: B) Harmful changes to air, water, or soil. 10. Osmosis is specifically: A) A type of active transport used by plants. B) A special type of diffusion where water moves through a semi-permeable membrane from an area of higher water concentration to an area of lower water concentration. C) The hydrolysis of starch into glucose. D) The movement of solutes from low to high concentration without energy. Show Answer Correct Answer: B) A special type of diffusion where water moves through a semi-permeable membrane from an area of higher water concentration to an area of lower water concentration. 11. *When water moves through a membrane from an area of high concentration to an area of low concentration, this is known as A) Osmosis. B) Diffusion. C) Dilution. D) *active transfer. Show Answer Correct Answer: A) Osmosis. 12. Air pollution that occurs in sunlight is(a) oxidising smog(b) fog(c) reducing smog(d) acid rain. A) A. B) B. C) C. D) D. Show Answer Correct Answer: A) A. 13. This can transform nitrogen in the atmosphere into a usable form of nitrogen A) Rain. B) Ice. C) Lightning. D) Sun. Show Answer Correct Answer: C) Lightning. 14. Which term refers to substances plants and animals need, such as nitrogen and phosphorus? A) Pollutants. B) Nutrients. C) Toxins. D) Hazardous waste. Show Answer Correct Answer: B) Nutrients. 15. Excessive release of CO$_{2}$ into the atmosphere results in(a) global warming(b) formation of smog(c) polar vortex(d) depletion of ozone. A) A. B) B. C) C. D) D. Show Answer Correct Answer: A) A. 16. Which is NOT biodegradable? A) Leaves and sticks blown down during a storm. B) Food waste that is being composed. C) Plastic bottles thrown in the ditch. D) Dead animals on the side of the road. Show Answer Correct Answer: C) Plastic bottles thrown in the ditch. 17. Which of the following is a step in the water cycle? A) Photosynthesis. B) Combustion. C) Precipitation. D) Fermentation. Show Answer Correct Answer: C) Precipitation. 18. The oxidation number of nitrogen in N$_{2 }$is A) +1. B) +3. C) 0. D) -3. Show Answer Correct Answer: C) 0. 19. Which one is the most toxic? A) Parts per thousand. B) Parts per million. C) Parts per billion. D) Parts per trillion. Show Answer Correct Answer: A) Parts per thousand. 20. What are some common misconceptions about air pollution? A) Air pollution only affects urban areas. B) Air pollution is a localized problem that only affects those living near pollution sources. C) Air pollution only affects outdoor air quality. D) Air pollution only affects the respiratory system. Show Answer Correct Answer: A) Air pollution only affects urban areas. 21. A mixture of gases that surround the earth A) Thermosphere. B) Troposphere. C) Atmosphere. D) Ozone Layer. Show Answer Correct Answer: C) Atmosphere. 22. The oxidation numbers of all the atoms in H$_{2}$SO$_{4}$ must add up to A) 0. B) +5. C) +9. D) +16. Show Answer Correct Answer: A) 0. 23. Anhydrous copper(II) sulfate can be used to test presence of water. What is the colour change of the copper(II) sulfate when there is water? A) Blue to pink. B) Pink to blue. C) White to blue. D) Blue to white. Show Answer Correct Answer: C) White to blue. 24. Which factor directly affects dissolved oxygen levels in water according to the material? A) Photosynthesis and organism activity, along with turbulence and temperature. B) Presence of sulfur dioxide in the air. C) Amount of carbon monoxide from vehicle emissions. D) Thickness of the ozone layer. Show Answer Correct Answer: A) Photosynthesis and organism activity, along with turbulence and temperature. 25. Identify the CORRECT matching. I. RCO-alkoxyl radical II. RCOOO-acylperoxyl radical III. RO-peroxyl radical IV. HOO-hydroperoxyl radical A) I and II. B) I and III. C) II and IV. D) II, III and IV. Show Answer Correct Answer: C) II and IV. ← 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