This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Chemistry Part Ii > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 12 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Pesticide run-off from agricultural areas is an example of a A) Point Source. B) Non-Point Source. C) All the above. D) None of the above. Show Answer Correct Answer: B) Non-Point Source. 2. What is the manipulated variable in the experiment above? A) The overall growth of the plants. B) The length of time that each plant grows. C) The amount of water that the plants receive. D) The brand of fertilizer that is used on each plant. Show Answer Correct Answer: D) The brand of fertilizer that is used on each plant. 3. What is biodiversity and why is it important for ecosystems? A) Biodiversity is the same as the total biomass of an ecosystem. B) Biodiversity is unimportant for ecosystem functions and services. C) Biodiversity is the variety of life in an ecosystem, and it is crucial for ecosystem health, stability, and the provision of essential services. D) Biodiversity refers to the number of species in a single habitat only. Show Answer Correct Answer: C) Biodiversity is the variety of life in an ecosystem, and it is crucial for ecosystem health, stability, and the provision of essential services. 4. A chemical that changes color to indicate whether a substance is an acid or a base A) Limus. B) Neutralizer. C) Oxidator. D) Indicator. Show Answer Correct Answer: D) Indicator. 5. The scattering of a substance (pollutant) away from its source is called ..... A) Dilution. B) Diffusion. C) Displacement. D) Dispersion. Show Answer Correct Answer: D) Dispersion. 6. Polimer Nylon 66 dibuat dari kombinasi monomer ..... A) Asam asetat dan formaldehida. B) Etilena glikol dan asam tereftalat. C) Propilena dan stirena. D) Asam adipat dan heksametilena diamina. Show Answer Correct Answer: D) Asam adipat dan heksametilena diamina. 7. Which human activity is a major cause of increased carbon dioxide levels? A) Photosynthesis. B) Drinking water. C) Swimming. D) Deforestation. Show Answer Correct Answer: D) Deforestation. 8. Sulfur trioxide (SO3) reacts with water to form: A) H2O2. B) H2S. C) H2SO3. D) H2SO4. Show Answer Correct Answer: D) H2SO4. 9. Cigarettes and e-cigarettes both contain: A) Nicotine. B) Formaldehyde. C) Tobacco. D) Tar. Show Answer Correct Answer: A) Nicotine. 10. Which pollutant is most associated with respiratory diseases? A) Helium. B) Sulfur dioxide. C) Hydrogen. D) Neon. Show Answer Correct Answer: B) Sulfur dioxide. 11. *Plastic that can be broken down by sunlight is an example of: A) Photolysis. B) Photosynthesis. C) *phytoremediation. D) Biodegradation. Show Answer Correct Answer: A) Photolysis. 12. Which gas is a major contributor to the greenhouse effect? A) Carbon dioxide. B) Nitrogen. C) Neon. D) Oxygen. Show Answer Correct Answer: A) Carbon dioxide. 13. Which item is a poison? A) Bleach. B) Orange Juice. C) Vinegar. D) Cereal. Show Answer Correct Answer: A) Bleach. 14. Organisms are affected by which of these causes?A:Heavy metalsB:Phosphorus and NitrogenC:Biological indicators A) A and B. B) A and C. C) B and C. D) A, B, and C. Show Answer Correct Answer: A) A and B. 15. Although some ocean pollution is the result of natural occurrences, most pollution is related to ..... A) Human activities. B) Ozone depletion. C) Global warming. D) Upwelling. Show Answer Correct Answer: A) Human activities. 16. Which of the following rows describes what can happen to the oxygen concentration and the variety of organisms at the point in the river where the warm water is returned? A) Decreases, Increases. B) Increases, Decreases. C) Decreases, Decreases. D) Increases, Increases. Show Answer Correct Answer: C) Decreases, Decreases. 17. What is O$_{3}$? A) Oxygen. B) Ozone. C) Osmium. D) A greenhouse gas. Show Answer Correct Answer: B) Ozone. 18. Why is recycling encouraged? A) Makes fuel. B) Reduces mining. C) Uses more water. D) Increases power demand. Show Answer Correct Answer: B) Reduces mining. 19. What is a key outcome of the training module for teachers? A) To develop scientific inquiry skills. B) To limit teaching methods. C) To promote environmental ignorance. D) To discourage scientific inquiry. Show Answer Correct Answer: A) To develop scientific inquiry skills. 20. Wet deposition occurs mainly through: A) Sedimentation. B) Rain, snow, and fog. C) Evaporation. D) Condensation only. Show Answer Correct Answer: B) Rain, snow, and fog. 21. Which of the following will not undergo reaction? A) Zinc metal + iron oxide. B) Zinc metal + zinc oxide. C) Iron metal + copper oxide. D) Magnesium + iron oxide. Show Answer Correct Answer: B) Zinc metal + zinc oxide. 22. Which gas is most abundant in clean, dry air? A) Carbon dioxide. B) Argon. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: D) Nitrogen. 23. Which compound is inorganic? A) SO$_{4}$. B) C$_{2}$HON$_{2}$. C) All the above. D) None of the above. Show Answer Correct Answer: A) SO$_{4}$. 24. Which of the following is secondary pollutant? A) SO2. B) PAN. C) N2O. D) CO2. Show Answer Correct Answer: B) PAN. 25. Which of the following substances is organic? A) Sugar. B) Sulfur. C) Salt. D) Silicon. Show Answer Correct Answer: A) Sugar. 26. Long term damage after repeated or continuous exposure over a long period is called ..... A) Chronic Toxicity. B) Accumulated Toxicity. C) Acute Toxicity. D) Dispersed Toxicity. Show Answer Correct Answer: A) Chronic Toxicity. 27. This fossil fuel has been created by the remains of plants and must be mined from deep within the Earth. A) Natural gas. B) Solar. C) Coal. D) Oil. Show Answer Correct Answer: C) Coal. 28. What measures can be taken to reduce pesticide runoff into water bodies? A) Implement buffer zones, use integrated pest management, apply pesticides carefully, and educate farmers. B) Install drainage systems, apply pesticides at night, and reduce crop diversity. C) Create artificial lakes, use more fertilizers, and plant invasive species. D) Increase chemical usage, ignore weather conditions, and avoid crop rotation. Show Answer Correct Answer: A) Implement buffer zones, use integrated pest management, apply pesticides carefully, and educate farmers. 29. An organic compound always contains A) Hydrogen. B) Oxygen. C) Carbon. D) Nitrogen. Show Answer Correct Answer: C) Carbon. 30. Common nutrients include A) Nitrogen and oxygen. B) Sodium and Nitrate. C) Lead and Cadmium. D) Hydrocarbons. Show Answer Correct Answer: A) Nitrogen and oxygen. 31. What are the activities included in the session on acid-base indicators? A) Discussing the role of nitrifying bacteria in the reaction of nitrogen-based fertilizers. B) Listing chemical industries in Ethiopia. C) Brainstorming on the causes of air pollution. D) Watching a video on the preparation of natural acid-base indicators from plants. Show Answer Correct Answer: D) Watching a video on the preparation of natural acid-base indicators from plants. 32. What is water hardness? A) The amount of dissolved calcium and degassing. B) The amount of dissolved ammonia and nitrites. C) The amount of dissolved oxygen and potassium. D) The amount of dissolved calcium and magnesium. Show Answer Correct Answer: D) The amount of dissolved calcium and magnesium. 33. What is the standard electrode potential for H$_{2}$(g)? A) -1. B) -2. C) 0. D) +1. Show Answer Correct Answer: C) 0. 34. What is the unit of measurement for bond energy? A) Watts per second. B) Kilojoules per mole. C) Calories per gram. D) Joules per mole. Show Answer Correct Answer: D) Joules per mole. 35. The mole fraction of nitrogen in the air is 0.78. What is the mole fraction of nitrogen in water? A) 1.85 x 10$^{-5}$. B) 2.46 x 10$^{-6}$. C) 9.12 x 10$^{-6}$. D) 4.91 x 10$^{-6}$. Show Answer Correct Answer: C) 9.12 x 10$^{-6}$. 36. How do pesticides affect non-target species in ecosystems? A) Pesticides have no effect on non-target species in ecosystems. B) Pesticides only benefit target species without harming others. C) Pesticides enhance the growth of non-target species in ecosystems. D) Pesticides negatively impact non-target species by causing toxicity and disrupting ecological balance. Show Answer Correct Answer: D) Pesticides negatively impact non-target species by causing toxicity and disrupting ecological balance. 37. Active transport in plants involves: A) Water moving across membranes without energy. B) Plants using energy to move nutrients from the soil into their roots against a concentration gradient. C) Passive diffusion of molecules from high to low concentration. D) Conversion of nitrogen gas into usable compounds. Show Answer Correct Answer: B) Plants using energy to move nutrients from the soil into their roots against a concentration gradient. 38. Which of the following disciplines studies the chemistry of the earth's atmosphere? A) Acid rain. B) Atmospheric chemistry. C) Global warming chemistry chemistry. D) Earth chemistry. Show Answer Correct Answer: B) Atmospheric chemistry. 39. Micronutrients are defined as: A) Elements needed in very small amounts by organisms; both deficiency and excess can be harmful. B) Elements and compounds needed in large amounts for growth and development. C) Compounds with pH greater than 7 that feel slippery. D) Substances that passively move from high to low concentration. Show Answer Correct Answer: A) Elements needed in very small amounts by organisms; both deficiency and excess can be harmful. 40. How much UV radiation does the ozone layer normally filter out? A) 99%. B) 0%. C) 50%. D) 10%. Show Answer Correct Answer: A) 99%. 41. During which process does an atom, molecule, or ion lose one or more electrons? A) Transmutation. B) Neutralization. C) Reduction. D) Oxidation. Show Answer Correct Answer: D) Oxidation. 42. In which direction does electricity flow in a galvanic cell (battery)? A) Electrons flow from the cathode to the anode. B) Electrons flow from anode to cathode. C) Electrons flow from left to right. D) Electrons flow from right to left. Show Answer Correct Answer: B) Electrons flow from anode to cathode. 43. What is the main cause of soil/land pollution related to waste disposal? A) Dumping non-biodegradable wastes. B) Agriculture. C) Deforestation. D) Industrial waste. Show Answer Correct Answer: A) Dumping non-biodegradable wastes. 44. An abundance of which of the following would indicate that water is polluted? A) Trout and other game fish. B) Sludge worms and leeches. C) Salamanders and turtles. D) Variety of insect larvae. Show Answer Correct Answer: B) Sludge worms and leeches. 45. Methane is a gas that impacts climate change and is called a ..... A) Glasshouse gas. B) Greenhouse gas. C) Hothouse gas. D) None of the above. Show Answer Correct Answer: B) Greenhouse gas. 46. What are organic nutrients? A) Nutrients that are synthetic. B) Nutrients that are inorganic. C) Nutrients derived from living organisms. D) Nutrients that are artificial. Show Answer Correct Answer: C) Nutrients derived from living organisms. 47. High biodiversity is a sign of a healthy ecosystem. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 48. HNO$_{3}$ is an example of a(n) A) Acid. B) Base. C) Neutral. D) None of the above. Show Answer Correct Answer: A) Acid. 49. The presence of ammonia in the atmosphere can: A) Neutralize acids partially. B) Increase acidity. C) All the above. D) None of the above. Show Answer Correct Answer: A) Neutralize acids partially. 50. What is the main environmental concern associated with the use of chlorofluorocarbons (CFCs)? A) Acid rain. B) Global warming. C) Ozone layer depletion. D) Water pollution. Show Answer Correct Answer: C) Ozone layer depletion. 51. Natural neutralizing agent of acid rain in soils: A) NaCl. B) Fe2O3. C) CaCO3. D) SiO2. Show Answer Correct Answer: C) CaCO3. 52. Is the amount of a substance that causes 50% of a group of test animals to die ..... A) AP50. B) DR50. C) Tox50. D) LD50. Show Answer Correct Answer: D) LD50. 53. The substance which is a primary pollutant is A) H2SO4. B) Aldehydes. C) CO. D) PAN. Show Answer Correct Answer: C) CO. 54. True or False. A substance is Organic if it contains Carbon A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 55. What is the importance of cleaner production in addressing global environmental challenges? A) It reduces waste generation and resource consumption. B) It has no impact on environmental sustainability. C) It promotes the use of harmful chemicals. D) It increases greenhouse gas emissions. Show Answer Correct Answer: A) It reduces waste generation and resource consumption. 56. Which description correctly distinguishes the ozone layer from ground-level ozone? A) Both are beneficial to crops. B) The ozone layer is high in the atmosphere and absorbs harmful ultraviolet radiation; ground-level ozone is a pollutant harmful to health and crops. C) Both are greenhouse gases trapping heat. D) Ground-level ozone protects against UV radiation while the ozone layer causes smog. Show Answer Correct Answer: B) The ozone layer is high in the atmosphere and absorbs harmful ultraviolet radiation; ground-level ozone is a pollutant harmful to health and crops. 57. What are the two main methods of rust prevention? A) Sacrificial protection and reduction. B) Applying protective layer and reduction. C) Sacrificial protection and applying protective layer. D) Oxidation and reduction. Show Answer Correct Answer: C) Sacrificial protection and applying protective layer. 58. In an ion-exchange resin, the calcium ions in hard water are replaced by: A) Chloride ions. B) Sodium ions. C) Hydrogen ions. D) Hydroxide ions. Show Answer Correct Answer: B) Sodium ions. 59. Which among the following is NOT a particulate pollutant? A) Smog. B) Dust. C) Smoke. D) CO. Show Answer Correct Answer: D) CO. 60. What does it mean that pesticides may not be "selective" ? A) Pesticides will choose which pests they kill. B) Pesticides may not only kill pests. C) All the above. D) None of the above. Show Answer Correct Answer: B) Pesticides may not only kill pests. ← PreviousNext →Related QuizzesScience QuizzesClass 11 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books