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 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 10 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Compounds that contain carbon and generally come from things that are living or were once living ..... A) Micronutrients. B) Organic. C) Nutrients. D) Inorganic. Show Answer Correct Answer: B) Organic. 2. What was the chemical name given to Rust? A) Carbon. B) Iron Oxide. C) All the above. D) None of the above. Show Answer Correct Answer: B) Iron Oxide. 3. What is a misconception about air pollution? A) It is caused by natural sources. B) It is easily reversible. C) It has no health impacts. D) It only affects urban areas. Show Answer Correct Answer: D) It only affects urban areas. 4. The best long-term solution to acid rain is: A) Diluting rainwater. B) Reducing SO2 and NOx emissions. C) Neutralizing lakes. D) Burying limestone. Show Answer Correct Answer: B) Reducing SO2 and NOx emissions. 5. Which of the following is true about acids? A) Acids dissolve in water to form a solution with a pH higher than 7. B) Acids have a pH of exactly 7. C) Acids do not dissolve in water. D) Acids dissolve in water to form a solution with a pH lower than 7. Show Answer Correct Answer: D) Acids dissolve in water to form a solution with a pH lower than 7. 6. How do greenhouse gases, such as methane and carbon dioxide, contribute to global warming? A) They absorb incoming short-wave radiation from the sun. B) They react with and destroy the ozone layer. C) They absorb outgoing long-wave (infrared) radiation from the Earth. D) They are a direct source of acid rain. Show Answer Correct Answer: C) They absorb outgoing long-wave (infrared) radiation from the Earth. 7. Acid rain damages plant leaves by: A) Thickening cuticle. B) Leaching nutrients and chlorophyll. C) Increasing photosynthesis. D) Promoting wax formation. Show Answer Correct Answer: B) Leaching nutrients and chlorophyll. 8. What was coal formed from? A) Marine animals. B) Plants. C) Water. D) None of the above. Show Answer Correct Answer: B) Plants. 9. The gas that is not considered as a 'green house gas' is A) CH4. B) O3. C) CO2. D) O2. Show Answer Correct Answer: D) O2. 10. Name three greenhouse gases and their sources. A) Carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and their sources:CO2 from fossil fuel combustion, CH4 from fossil fuel production, N2O from agriculture. B) Sulfur dioxide (SO2) from volcanic eruptions. C) Ozone (O3) from vehicle emissions. D) Water vapor (H2O) from ocean evaporation. Show Answer Correct Answer: A) Carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O) and their sources:CO2 from fossil fuel combustion, CH4 from fossil fuel production, N2O from agriculture. 11. Which of the following contributes to the natural greenhouse effect? A) Neon gas. B) Helium gas. C) Nitrogen gas. D) Water vapor. Show Answer Correct Answer: D) Water vapor. 12. Having a pH level of less than 7 A) Alkaline. B) Basic. C) Acidic. D) Lipid. Show Answer Correct Answer: C) Acidic. 13. Which factor directly affects dissolved oxygen levels in aquatic environments? A) Turbulence, temperature, photosynthesis, and organism activity. B) Atmospheric ozone thickness only. C) Amount of carbon monoxide in air. D) Presence of scrubbers on factory stacks. Show Answer Correct Answer: A) Turbulence, temperature, photosynthesis, and organism activity. 14. In an acidimetric potentiometric titration of a seawater sample, Vp means A) The mass of acid needed to neutralize phenolphthalein. B) The mass of acid to remove all the carbonate in the sample. C) The volume of acid to remove all the bicarbonate in the sample. D) The volume of acid to turn phenolphthalein colorless. Show Answer Correct Answer: D) The volume of acid to turn phenolphthalein colorless. 15. Which of the following is a primary pollutant in environmental chemistry? A) Carbon dioxide (CO2). B) Nitric acid (HNO3). C) Sulfur dioxide (SO2). D) Ozone (O3). Show Answer Correct Answer: C) Sulfur dioxide (SO2). 16. Which amongst the following is the correct statement regarding role of KMnO4 in treatment of phosphorous poisoning? A) It is used to treat hypoprothrombinemia. B) It oxidizes phosphorous into phosphoric acid. C) It is used to adsorb Phosphorous. D) Coats the particles of phosphorous with a film. Show Answer Correct Answer: B) It oxidizes phosphorous into phosphoric acid. 17. Apa efek jangka panjang dari polutan lingkungan terhadap ekosistem? A) Efek jangka panjang dari polutan lingkungan terhadap ekosistem termasuk penurunan keanekaragaman hayati, degradasi habitat, dan gangguan fungsi ekosistem. B) Peningkatan kesuburan tanah. C) Interaksi spesies yang meningkat. D) Kualitas air yang lebih baik. Show Answer Correct Answer: A) Efek jangka panjang dari polutan lingkungan terhadap ekosistem termasuk penurunan keanekaragaman hayati, degradasi habitat, dan gangguan fungsi ekosistem. 18. A person lacking iodine may suffer from a deficiency disease called ..... A) VKDB. B) Kwashiorkor. C) Rickets. D) Goiter. Show Answer Correct Answer: D) Goiter. 19. Which of the following is a major benefit of afforestation? A) Increases carbon dioxide levels. B) Increases air pollution. C) Improves air quality. D) Reduces oxygen production. Show Answer Correct Answer: C) Improves air quality. 20. How is crude oil extracted from the crust? A) By drilling. B) By mining. C) By fracking. D) None of the above. Show Answer Correct Answer: A) By drilling. 21. The oxidation of NO to NO2 occurs mainly through: A) Hydrolysis. B) Direct photolysis. C) Carbonation. D) Reaction with O3. Show Answer Correct Answer: D) Reaction with O3. 22. Long-term monitoring of acid deposition involves measuring: A) PH and ion concentrations in rainwater. B) Temperature. C) Wind velocity. D) Cloud color. Show Answer Correct Answer: A) PH and ion concentrations in rainwater. 23. Which reaction represents the formation of carbon monoxide? A) C + O2 $\rightarrow$ CO2. B) 2C + O2 $\rightarrow$ 2CO. C) N2 + O2 $\rightarrow$ NO2. D) SO2 + O2 $\rightarrow$ SO3. Show Answer Correct Answer: B) 2C + O2 $\rightarrow$ 2CO. 24. An underground container where bacteria break down the organic materials ..... A) Septic tank. B) Effluent tank. C) Sewage container. D) Storm sewer. Show Answer Correct Answer: A) Septic tank. 25. Reducing the concentration of a pollutant by mixing it with large quantities of water is called ..... A) Displacement. B) Dilution. C) Dispersion. D) Diffusion. Show Answer Correct Answer: B) Dilution. 26. What can high water hardness lead to? A) Lead in drinking water. B) Lower boiling point. C) Mineral build up in pipes. D) Higher boiling point. Show Answer Correct Answer: C) Mineral build up in pipes. 27. The oxidation of SO2 in the atmosphere can occur via: A) O3 and H2O2. B) CO2. C) N2O. D) CH4. Show Answer Correct Answer: A) O3 and H2O2. 28. What is the main cause of ozone layer depletion? A) Oxygen. B) Nitrogen oxides. C) Carbon dioxide. D) Chlorofluorocarbons (CFCs). Show Answer Correct Answer: D) Chlorofluorocarbons (CFCs). 29. Inorganic compounds are best described as: A) Compounds containing carbon found in living organisms. B) Chemical compounds that do not contain carbon, such as minerals and salts. C) Large, complex molecules like carbohydrates and nucleic acids. D) Compounds produced only by plants during photosynthesis. Show Answer Correct Answer: B) Chemical compounds that do not contain carbon, such as minerals and salts. 30. What is the full chemical name of DDT? A) Dichlorodiphenyltrichloroethane. B) Dichlorodiphenyltrichloromethane. C) Dichlorodiphenyltrichloroethanol. D) Dichlorodiphenyltrichloroethene. Show Answer Correct Answer: A) Dichlorodiphenyltrichloroethane. 31. 'Silent Spring' had a significant impact on environmental awareness by: A) Supporting industrial growth. B) Promoting the use of chemical pesticides. C) Ignoring the effects of pollution. D) Raising public awareness about the dangers of pesticides. Show Answer Correct Answer: D) Raising public awareness about the dangers of pesticides. 32. What cause land pollution? A) People throw too much rubbish in the sea. B) People reuse things. C) People throw too much rubbish everywhere. D) People reduce making rubbish. Show Answer Correct Answer: C) People throw too much rubbish everywhere. 33. Advantages of filtration in water purification are A) Kills all microorganisms in water. B) Removes all minerals salts in water. C) Water is clear and free from suspended particles. D) Does not contains dissolved substances. Show Answer Correct Answer: C) Water is clear and free from suspended particles. 34. What home habit reduces energy waste? A) Running empty fridges. B) Leaving taps on. C) Heating empty rooms. D) Using double glazing. Show Answer Correct Answer: D) Using double glazing. 35. How does global warming affect biodiversity? A) Promotes all species. B) Causes habitat loss. C) Increases all plant growth. D) Improves migration. Show Answer Correct Answer: B) Causes habitat loss. 36. A chemical has an LD 75 of 100 mg, and an LD 50 of 50 mg. A scientist puts 100 mg of that chemical inside 500 rats in a cage. How many are expected to live? A) 125. B) 500. C) 375. D) 250. Show Answer Correct Answer: A) 125. 37. What is the MAIN REASON why nitrates and phosphates aren't good inside water? A) They take up all the nutrients inside the water. B) They take up all the sunlight inside the water. C) They actually help the water. D) They take out all of the oxygen in the water. Show Answer Correct Answer: D) They take out all of the oxygen in the water. 38. Acid rain has a pH A) Less than 5.6. B) More than 8. C) 6. D) 7. Show Answer Correct Answer: A) Less than 5.6. 39. Which is NOT a part of an area's overall biodiversity? A) Ecosystem Biodiversity. B) Species Biodiversity. C) Evolution Biodiversity. D) Genetic Biodiversity. Show Answer Correct Answer: C) Evolution Biodiversity. 40. All rocks are made up of minerals. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 41. Which of the following is NOT a method to teach global warming? A) Group brainstorming. B) Using technology. C) Ignoring student misconceptions. D) Discussing real-life examples. Show Answer Correct Answer: C) Ignoring student misconceptions. 42. Which is a category of water pollution? A) Dihydrogen monoxide. B) Food. C) Medical. D) Sediment. Show Answer Correct Answer: D) Sediment. 43. What is the main role of a catalytic converter in a vehicle? A) Reduce harmful emissions like carbon monoxide. B) Increase fuel efficiency. C) Cool the engine. D) Store extra fuel. Show Answer Correct Answer: A) Reduce harmful emissions like carbon monoxide. 44. The process by which toxins are concentrated as they move up the food chain is called? A) Biomagnification. B) Pollution. C) Biomass stratification. D) Web magnification. Show Answer Correct Answer: A) Biomagnification. 45. Which practice helps reduce air pollution? A) Cutting down forests. B) Increasing vehicle use. C) Using public transportation. D) Burning more fossil fuels. Show Answer Correct Answer: C) Using public transportation. 46. Polimer yang tersusun dari satu jenis monomer disebut ..... A) Kopolimer. B) Polimer bercabang. C) Polimer termoset. D) Homopolimer. Show Answer Correct Answer: D) Homopolimer. 47. The correct equation for complete combustion of methane is ..... A) CH$_{4}$ + 2O$_{2}$ $\rightarrow$ CO$_{2}$ + 2H$_{2}$O. B) CH$_{4}$ + 2O$_{}$ $\rightarrow$ CO$_{}$. C) CH$_{4}$ + O$_{}$ $\rightarrow$ CO$_{2}$ + 2H$_{2}$O. D) CH$_{3}$ + 2O$_{2}$ $\rightarrow$ 2H$_{2}$O. Show Answer Correct Answer: A) CH$_{4}$ + 2O$_{2}$ $\rightarrow$ CO$_{2}$ + 2H$_{2}$O. 48. What is a precipitate? A) A soluble solvent in a saturated solution. B) An insoluble reactant formed during a chemical reaction. C) A soluble solute in a saturated solution. D) An insoluble product formed during a chemical reaction. Show Answer Correct Answer: D) An insoluble product formed during a chemical reaction. 49. Why is rising global temperature a concern? A) Cooler oceans. B) More sunlight. C) Melting ice caps. D) Less farming. Show Answer Correct Answer: C) Melting ice caps. 50. The ozone layer forms naturally by A) The interaction of CFC with oxygen. B) The interaction of UV radiation with oxygen. C) The interacton of IR radiation with oxygen. D) The interaction of oxygen and water vapour. Show Answer Correct Answer: B) The interaction of UV radiation with oxygen. 51. Which energy source does NOT contribute to air pollution? A) Natural gas. B) Wind. C) Coal. D) Oil. Show Answer Correct Answer: B) Wind. 52. When sodium reacts with hydrochloric acid, what is the name of the salt formed? A) Sodium Chloride. B) Sodium Hydride. C) Sodium Hydrochloric. D) Sodium Chlorine. Show Answer Correct Answer: A) Sodium Chloride. 53. Which term refers to gases like carbon dioxide, methane, water vapor, and nitrogen oxides that trap heat in the atmosphere and affect Earth's climate? A) Biological Indicators. B) Scrubbers. C) Greenhouse Gases. D) Chemical Indicators. Show Answer Correct Answer: C) Greenhouse Gases. 54. *Fish die when the pH of the water is A) 4. B) 7. C) 6. D) 8. Show Answer Correct Answer: A) 4. 55. What is the main purpose of the experiment described? A) To change the color of the solution. B) To create a new substance. C) To observe yeast activity. D) To measure temperature changes. Show Answer Correct Answer: C) To observe yeast activity. 56. Silent valley is in which district A) Wayanad. B) Alapuzha. C) Malappuram. D) Palakkad. Show Answer Correct Answer: D) Palakkad. 57. The atmosphere is slightly acidic because of A) The presence of low level of ammonia. B) The formation of hydrochloric acid by the dissolution of chlorine gas in water. C) The existence of high amount of nitrogen. D) The presence of a low level of carbon dioxide. Show Answer Correct Answer: D) The presence of a low level of carbon dioxide. 58. Which statement distinguishes organic from inorganic compounds as described? A) Organic compounds contain oxygen; inorganic compounds do not. B) Organic compounds contain carbon and are vital for life; inorganic compounds do not contain carbon. C) Organic compounds are always harmful; inorganic are always safe. D) Organic compounds are only found in plants; inorganic are only found in animals. Show Answer Correct Answer: B) Organic compounds contain carbon and are vital for life; inorganic compounds do not contain carbon. 59. Normal rainwater has a pH around: A) 5.6. B) 4.0. C) 7.0. D) 6.5. Show Answer Correct Answer: A) 5.6. 60. Which gas is NOT responsible for acid rain? A) Carbon dioxide. B) Nitrogen oxides. C) Sulfur dioxide. D) Methane. Show Answer Correct Answer: D) Methane. ← 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