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 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the relationship between the Green legacy, Global warming, and climate change in Ethiopia? A) Global warming is not influenced by tree planting. B) The Green legacy initiative has no impact on climate change. C) Climate change is a natural phenomenon. D) The Green legacy initiative aims to combat climate change through tree planting. Show Answer Correct Answer: D) The Green legacy initiative aims to combat climate change through tree planting. 2. When water turns into a gas A) Condensation. B) Evaporation. C) Precipitation. D) None of the above. Show Answer Correct Answer: B) Evaporation. 3. Which statement about water quality monitoring is accurate? A) Clear water always indicates healthy water quality. B) Water quality is measured using biological indicators and chemical factors. C) Water quality can only be assessed by measuring pH. D) Only smell is used to determine water quality. Show Answer Correct Answer: B) Water quality is measured using biological indicators and chemical factors. 4. Positively charged subatomic particle in the nucleus of an atom A) Electron. B) Positron. C) Proton. D) Neutron. Show Answer Correct Answer: C) Proton. 5. During a study of remote western Canadian lakes, Mr. Kwong was confused by his discovery that although the rain in his study area was acidic, the lake water was of normal pH. What could you tell him that would best explain this discrepancy? A) Fresh water was continuing to run into the lake. B) The lake had been limed several years earlier. C) Acid rain does not affect large lakes due to dilution effects. D) The lake bottom contains carbonate rock. Show Answer Correct Answer: D) The lake bottom contains carbonate rock. 6. How does pH affect the solubility of pollutants in water? A) All pollutants are equally soluble regardless of pH. B) PH has no effect on pollutant solubility in water. C) Higher pH always increases the solubility of all pollutants. D) PH influences the solubility of pollutants by affecting their ionization, with acidic pollutants being more soluble in low pH and basic pollutants in high pH. Show Answer Correct Answer: D) PH influences the solubility of pollutants by affecting their ionization, with acidic pollutants being more soluble in low pH and basic pollutants in high pH. 7. What is the result of mixing an acid and a base? A) Acid and water. B) Base and salt. C) Salt and water. D) Acid and base. Show Answer Correct Answer: C) Salt and water. 8. What can be toxic? A) Coffee. B) Water. C) Juice. D) All of these options. Show Answer Correct Answer: D) All of these options. 9. The Earth acts like a greenhouse that catches and traps heat from the sun. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. Lime treatment of lakes is used to: A) Neutralize acidity. B) Lower pH further. C) Oxidize metals. D) Remove algae. Show Answer Correct Answer: A) Neutralize acidity. 11. Which natural process removes carbon dioxide from the atmosphere? A) Photosynthesis. B) Cellular respiration. C) Volcanic eruptions. D) Forest fires. Show Answer Correct Answer: A) Photosynthesis. 12. What are the objectives of the session on some chemical industries in Ethiopia focusing on soap and detergents? A) To list some manufacturing industries in Ethiopia. B) To describe terms like soap, detergent, saponification, hard soap, and soft soap. C) To explain the methods and chemical processes involved in manufacturing fertilizers. D) To comprehend the importance of industrial chemistry to human life. Show Answer Correct Answer: B) To describe terms like soap, detergent, saponification, hard soap, and soft soap. 13. The reaction, H$_{2}$O + hv $\rightarrow$ HO$^{*}$ + H, represents A) Formation of the hydroxyl radical in the relatively unpolluted troposphere. B) Destruction of the hydroxyl radical at higher altitude. C) The strong reactivity of the hydroxyl radical. D) The formation of hydroxyl radical at higher altitudes. Show Answer Correct Answer: D) The formation of hydroxyl radical at higher altitudes. 14. In voltaic cells, reduction happens at the A) Voltmeter. B) Salt bridge. C) Cathode. D) Anode. Show Answer Correct Answer: C) Cathode. 15. Formation of photochemical smog takes place generally in A) Summer during morning time. B) Summer during day time. C) Winter during day time. D) Winter during morning time. Show Answer Correct Answer: A) Summer during morning time. 16. Air pollutants which are emitted directly into the atmosphere from an identifiable source are said to be A) Primary pollutants. B) VOCs. C) Aerosols. D) All. Show Answer Correct Answer: A) Primary pollutants. 17. The outcome variable to be measured A) Independent variable. B) Extraneous variable. C) Control variable. D) Dependent variable. Show Answer Correct Answer: D) Dependent variable. 18. Which of the following is an example of an organic nutrient? A) Vitamins. B) Carbohydrates. C) Minerals. D) Water. Show Answer Correct Answer: B) Carbohydrates. 19. Dalam konteks analisis kimia, mengapa RPL sangat penting dalam pemantauan dampak? A) RPL menilai dampak ekonomi proyek. B) RPL berfungsi hanya untuk mengevaluasi aspek sosial. C) RPL menggantikan kebutuhan analisis laboratorium. D) RPL memastikan parameter kimia dipantau secara berkala untuk memverifikasi mitigasi. Show Answer Correct Answer: D) RPL memastikan parameter kimia dipantau secara berkala untuk memverifikasi mitigasi. 20. Bagaimana polutan industri mempengaruhi kualitas air? A) Polutan industri tidak berpengaruh pada kualitas air atau ekosistem. B) Polutan industri meningkatkan kualitas air dengan menyaring kotoran. C) Polutan industri merusak kualitas air dengan memperkenalkan zat beracun yang membahayakan ekosistem akuatik dan kesehatan manusia. D) Polutan industri bermanfaat bagi kehidupan akuatik dan kesehatan manusia. Show Answer Correct Answer: C) Polutan industri merusak kualitas air dengan memperkenalkan zat beracun yang membahayakan ekosistem akuatik dan kesehatan manusia. 21. Chemicals that have a bitter taste or slippery feel are usually A) Enzymes. B) Bases. C) Catalysts. D) Acids. Show Answer Correct Answer: B) Bases. 22. An organic nutrient that does not dissolve in water and is involved in energy storage A) Vitamin. B) Protein. C) Lipid. D) Carbohydrate. Show Answer Correct Answer: C) Lipid. 23. What is the adverse effect of carbon monoxide on human health? A) Strengthens the immune system. B) Prevents hemoglobin from carrying oxygen. C) Causes drowsiness. D) Enhances oxygen absorption. Show Answer Correct Answer: B) Prevents hemoglobin from carrying oxygen. 24. Electrostatic precipitators can be used to remove this type of air pollutant. A) Particulate matter. B) Ground level ozone. C) Sulfur dioxide. D) Volatile organic compounds. Show Answer Correct Answer: A) Particulate matter. 25. What is the term used to describe the excessive growth of algae in water due to nutrient enrichment? A) Algae Bloom. B) Algae Spread. C) Algae Surge. D) Algae Burst. Show Answer Correct Answer: A) Algae Bloom. 26. The 3 major plant nutrients (which are in most fertilizers) are all EXCEPT A) Oxygen. B) Phosphorus. C) Nitrogen. D) Potassium. Show Answer Correct Answer: A) Oxygen. 27. *True or false:you can dispose of hazardous chemicals safely by pouring them into a storm sewer A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 28. Identify the incorrect statements in the following A) Chlorofluorocarbons are responsible for ozone layer depletion. B) Green house effect is responsible for global warming. C) Ozone layer does not permit infrared radiation from the sun to reach the earth. D) Acid rain the is mostly because of oxides of nitrogen and sulphur. Show Answer Correct Answer: C) Ozone layer does not permit infrared radiation from the sun to reach the earth. 29. If fertilizers from a farm run off into a nearby lake, which is most likely to happen? A) Low turbidity. B) High water hardness. C) Coliform growth. D) An algae bloom. Show Answer Correct Answer: D) An algae bloom. 30. Test for sulphate ions is ..... A) Add acid. B) Add barium chloride. C) Add silver nitrate. D) None of the above. Show Answer Correct Answer: B) Add barium chloride. 31. What should be recorded at different elapsed times during the experiment? A) Temperature. B) Balloon inflation. C) Color change. D) Smell. Show Answer Correct Answer: B) Balloon inflation. 32. *An example of a micronutrient is: A) Oxygen. B) Hydrogen. C) Selenium. D) Carbon. Show Answer Correct Answer: C) Selenium. 33. Which statement is expressing a scientific perspective? A) How expensive is it to clean up the chemical pollution?. B) Which is more important, people's wants or wildlife's needs?. C) Are laws and regulations in place that prevent dumping?. D) What is causing this algae to form on the lake?. Show Answer Correct Answer: D) What is causing this algae to form on the lake?. 34. A ..... is a substance that increases the rate of a reaction without being used up during the reaction. A) Product. B) Solute. C) Reactant. D) Catalyst. Show Answer Correct Answer: D) Catalyst. 35. What happens to the non-biodegradable waste which is separated from domestic wastes? A) It is converted to compost. B) Sent for recycling. C) Deposited in landfills. D) Dumped in the ocean. Show Answer Correct Answer: B) Sent for recycling. 36. Acidic fog inhalation can damage: A) Liver. B) Eyes only. C) Lung tissues. D) Heart valves. Show Answer Correct Answer: C) Lung tissues. 37. *A bag of garden fertilizer has the label "10-5-15." The three numbers on a fertilizer label represent the percent composition of A) Nitrogen, phosphorus, and potassium. B) Nitrogen, sodium, and potassium. C) Carbon, phosphorus, and hydrogen. D) Carbon, oxygen, and hydrogen. Show Answer Correct Answer: A) Nitrogen, phosphorus, and potassium. 38. T/F:Some greenhouse gases are naturally present in the Earth's atmosphere A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 39. Which substance is directly affected by acid rain? A) Rubber. B) Limestone. C) Plastic. D) Glass. Show Answer Correct Answer: B) Limestone. 40. What is a common misconception about global warming? A) It has no impact on weather patterns. B) It only results in warmer temperatures. C) It is only caused by human activities. D) It is a recent phenomenon. Show Answer Correct Answer: B) It only results in warmer temperatures. 41. What type of metals tarnish QUICKLY A) Very reactive ones. B) Unreactive ones. C) Fairly reactive ones. D) All of the above. Show Answer Correct Answer: A) Very reactive ones. 42. Which of the following is a consequence of ozone layer depletion? A) Skin cancer. B) Increased crop yield. C) Improved air quality. D) Enhanced marine life. Show Answer Correct Answer: A) Skin cancer. 43. The least amount of freshwater on earth comes from? A) Glaciers and ice caps. B) Ground water. C) Rivers. D) Swamps. Show Answer Correct Answer: C) Rivers. 44. What happens during the primary stage of sewage treatment? A) Sedimentation of solids. B) Biological breakdown of organic matter. C) Removal of metals. D) Addition of chlorine. Show Answer Correct Answer: A) Sedimentation of solids. 45. Parts Per Million (ppm) is best described as: A) A measure of acidity from 0 to 14. B) A measure of wind speed affecting air quality. C) A unit expressing the concentration of a substance in water or air; one part per million units of solution or air. D) A method to convert sulfur dioxide to gypsum. Show Answer Correct Answer: C) A unit expressing the concentration of a substance in water or air; one part per million units of solution or air. 46. What is the purpose of the Chemistry Triangle in teaching? A) To simplify chemical equations. B) To connect concepts at different levels. C) To focus on laboratory techniques. D) To memorize chemical formulas. Show Answer Correct Answer: B) To connect concepts at different levels. 47. Biomagnification is the process by which: A) Chemicals increase in concentration at each trophic level of a food chain. B) Nutrients are cycled through the ecosystem. C) Energy is transferred from one trophic level to another. D) Organisms grow larger due to increased food intake. Show Answer Correct Answer: A) Chemicals increase in concentration at each trophic level of a food chain. 48. The smaller the particle size the faster the rate of dissolution (rate of dissolving). A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 49. What is the significance of the biochemical oxygen demand (BOD) in water quality? A) BOD measures the temperature of water and its effects on aquatic life. B) BOD is significant as it indicates the level of organic pollution and water quality. C) BOD indicates the presence of heavy metals in water samples. D) BOD is used to determine the mineral content in drinking water. Show Answer Correct Answer: B) BOD is significant as it indicates the level of organic pollution and water quality. 50. Rain washing soil away from a hillside is an example of A) Abrasion. B) Deposition. C) Weathering. D) Erosion. Show Answer Correct Answer: D) Erosion. 51. What is the pH of a neutral solution at 25$^\circ$C? A) 14. B) 5. C) 7. D) 1. Show Answer Correct Answer: C) 7. 52. The main oxidizing agents in cloud water are: A) H2O and CO2. B) O3, H2O2, and OH radicals. C) CH4 and H2S. D) Cl2 and HCl. Show Answer Correct Answer: B) O3, H2O2, and OH radicals. 53. Which statement about acids and bases is correct? A) Acids have pH greater than 7; bases have pH less than 7. B) Acids and bases both have a pH of 7. C) Acids have pH less than 7; bases have pH greater than 7. D) Acids are always safe to touch. Show Answer Correct Answer: C) Acids have pH less than 7; bases have pH greater than 7. 54. The nitrogen in the atmosphere is in the form of: A) N3. B) NO3. C) N2. D) NO4-. Show Answer Correct Answer: C) N2. 55. Substance produces hydroxide ions when dissolved in water A) Sugar. B) Base. C) Salt. D) Acid. Show Answer Correct Answer: B) Base. 56. What process removes carbon dioxide from the air? A) Combustion. B) Photosynthesis. C) Respiration. D) Decomposition. Show Answer Correct Answer: B) Photosynthesis. 57. Ground-level ozone primarily forms from reactions involving A) Chlorofluorocarbons and water vapor. B) Nitrogen oxides and volatile organic compounds. C) Carbon dioxide and oxygen in the stratosphere. D) Ammonia and phosphorus in soil. Show Answer Correct Answer: B) Nitrogen oxides and volatile organic compounds. 58. Chemicals used to kill insects, weeds, and other pests A) Genetic engineering. B) Salinization. C) Pesticide. D) Biological pest control. Show Answer Correct Answer: C) Pesticide. 59. *Which of the following indicate healthy water sample? A) Maggots. B) Mayflies. C) Larva. D) Worms. Show Answer Correct Answer: B) Mayflies. 60. What are the key points to address when teaching about natural resources and industry? A) Natural resources are classified into renewable and non-renewable resources. B) Industries rely on natural resources as raw materials for manufacturing products. C) Soaps and detergents are substances that remove dirt from surfaces. D) Natural resources are materials that occur in nature and can be used for economic gain. Show Answer Correct Answer: A) Natural resources are classified into renewable and non-renewable resources. ← 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 8Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books