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 13 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 13 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. When was the universal sanitation coverage expected? A) 4th September, 2019. B) 2nd December, 2015. C) 30th August, 2016. D) 2nd October, 2019. Show Answer Correct Answer: D) 2nd October, 2019. 2. This type of heavy metal poisoning is one of the oldest occupational and environmental disease in the world. A) Lead. B) Mercury. C) Arsenic. D) None of the above. Show Answer Correct Answer: A) Lead. 3. Which gas is primarily responsible for acid rain? A) Neon. B) Sulfur dioxide. C) Argon. D) Carbon dioxide. Show Answer Correct Answer: B) Sulfur dioxide. 4. How does weathering change the composition of water? A) Through breaking of rocks. B) Through decomposition of organic matter. C) Through deposition. D) Through evaporation. Show Answer Correct Answer: A) Through breaking of rocks. 5. When doing a flame test, what element is indicated by a purple/lilac flame? A) Barium. B) Calcium. C) Potassium. D) None of the above. Show Answer Correct Answer: C) Potassium. 6. A chemical used to target and control weeds A) Pesticide. B) Insecticide. C) Fungicide. D) Herbicide. Show Answer Correct Answer: D) Herbicide. 7. Lead leaching into water supplies due to acid rain can cause: A) Anemia and neurological damage. B) Skin allergies. C) Diabetes. D) Cholera. Show Answer Correct Answer: A) Anemia and neurological damage. 8. What are the two main classifications of natural resources? A) Abiotic and Biotic. B) Primary and Secondary. C) Organic and Inorganic. D) Renewable and Non-renewable. Show Answer Correct Answer: D) Renewable and Non-renewable. 9. ..... is the increase in concentration of a chemical as it moves up the food chain. A) Osmosis. B) Biodegradation. C) Biomagnification. D) Dispersion. Show Answer Correct Answer: C) Biomagnification. 10. The alkali metals are in group 1, on the far left of the periodic table. Which of these is NOT an alkali metal? A) Francium. B) Lithium. C) Iron. D) Potassium. Show Answer Correct Answer: C) Iron. 11. Why do safe handling and proper disposal of chemicals matter, based on the Important Ideas and Key Vocabulary? A) They prevent all acids from becoming bases. B) They protect people and nature from toxic or hazardous substances. C) They stop diffusion from occurring in water. D) They guarantee biomagnification will not happen. Show Answer Correct Answer: B) They protect people and nature from toxic or hazardous substances. 12. The first scientist to coin the term "acid rain" was: A) Robert Angus Smith. B) Joseph Priestley. C) Paul Crutzen. D) Svante Arrhenius. Show Answer Correct Answer: A) Robert Angus Smith. 13. Ozone and acid rain are both pollutants formed through reactions in the atmosphere. This makes them A) Atmospheric deposition. B) Atmospheric transport. C) Secondary air pollutants. D) Primary air pollutants. Show Answer Correct Answer: C) Secondary air pollutants. 14. What are the implications of teaching about global warming and climate change? A) To understand environmental pollution. B) To develop the scientific enquiry skills. C) To describe the principle of green chemistry and cleaner production. D) To propose safe methods of disposing non-biodegradable wastes. Show Answer Correct Answer: B) To develop the scientific enquiry skills. 15. Theory of evolution happens through a process called A) Natural selection. B) Adaptation. C) Survival of the fittest. D) Transfer of genes. Show Answer Correct Answer: A) Natural selection. 16. High concentration of fluoride is poisonous and harmful to bones and teeth at levels over: A) 3 ppm. B) 10 ppm. C) 1 ppm. D) 5 ppm. Show Answer Correct Answer: B) 10 ppm. 17. Which of these processes releases carbon dioxide into the air? A) Dissolving in sea water. B) Combustion of fossil fuels. C) Plants being eaten by animals. D) None of the above. Show Answer Correct Answer: B) Combustion of fossil fuels. 18. What are the gases can cause acid rain? A) Sulfur dioxide and nitrogen oxides. B) Hydrogen and argon. C) Oxygen and helium. D) Carbon monoxide and methane. Show Answer Correct Answer: A) Sulfur dioxide and nitrogen oxides. 19. What is the main source of carbon monoxide? A) Incomplete combustion of fuels. B) Volcanic eruptions. C) Photosynthesis. D) Ocean evaporation. Show Answer Correct Answer: A) Incomplete combustion of fuels. 20. Name the gas produced in incomplete combustion? A) Carbon monoxide. B) Oxygen. C) Hydrogen. D) Nitrogen. Show Answer Correct Answer: A) Carbon monoxide. 21. Factors that affect biodegradation include some of the following EXCEPT ..... A) Water Supply. B) PH. C) Nutrient Availability. D) Temperature. Show Answer Correct Answer: A) Water Supply. 22. Word used to describe chemicals scattering in various directions ..... A) Dilution. B) Dispersion. C) Travelling. D) Percolation. Show Answer Correct Answer: B) Dispersion. 23. Which statement about indoor air pollution is FALSE? A) Tobacco smoke is a type of indoor air pollutant. B) It is caused entirely by indoor-source air pollutants. C) Carbon and soot are indoor particulate matters. D) Indoor heating can produce NOx. Show Answer Correct Answer: B) It is caused entirely by indoor-source air pollutants. 24. What is the correct word equation for photosynthesis? A) Oxygen + glucose $\rightarrow$ carbon dioxide + water. B) Carbon dioxide + water $\rightarrow$ glucose + oxygen. C) Glucose + water $\rightarrow$ oxygen + carbon dioxide. D) 6CO$_{2 }$+ 6H$_{2}$O $\rightarrow$ C$_{6}$H$_{12}$O$_{6}$ + 6O$_{2}$. Show Answer Correct Answer: B) Carbon dioxide + water $\rightarrow$ glucose + oxygen. 25. The second step of the water treatment process is ..... A) Coagulation. B) Flocculation. C) Filtration. D) Sedimentation. E) Disinfection. Show Answer Correct Answer: B) Flocculation. 26. A molecule that helps enzymes function in the body A) Litmus. B) Pepsin. C) Vitamin. D) Protein. Show Answer Correct Answer: C) Vitamin. 27. Which is wrong with respect to our responsibility as a human being to protect our environment?(a) Avoiding the use of floodlighted facilities(b) Setting up compost tin in gardens(c) Using plastic bags(d) Restricting the use of vehicles A) C. B) B. C) A. D) D. Show Answer Correct Answer: A) C. 28. Dalam kajian baseline kualitas lingkungan, analis menemukan peningkatan BOD di sungai dekat pabrik pupuk. Untuk menilai apakah ini dampak kumulatif, mahasiswa harus ..... A) Mengabaikan data historis karena hanya data saat ini yang penting. B) Membandingkan tren jangka panjang dan menghubungkannya dengan berbagai sumber pencemaran. C) Menyimpulkan langsung bahwa pabrik pupuk penyebab tunggal. D) Fokus pada parameter fisika saja. Show Answer Correct Answer: B) Membandingkan tren jangka panjang dan menghubungkannya dengan berbagai sumber pencemaran. 29. Recycling helps the environment by: A) Creating more waste. B) Saving resources. C) Polluting the sea. D) Making landfills. Show Answer Correct Answer: B) Saving resources. 30. There are 50 mg of salt in 8, 000 mg of water. Write them in ppm. A) 160ppm. B) 4, 000ppm. C) 40, 000ppm. D) 6, 250ppm. Show Answer Correct Answer: D) 6, 250ppm. 31. The approximate pH of stomach acid is ..... A) 10. B) 6. C) 4. D) 1.5. Show Answer Correct Answer: D) 1.5. 32. What is the adverse effect of methane to the environment? A) Methane helps to cool the environment. B) Contribution to global warming and climate change. C) Methane contributes to the growth of plant life. D) Methane has no adverse effect on the environment. Show Answer Correct Answer: B) Contribution to global warming and climate change. 33. How many steps are in the water treatment process? A) 6. B) 7. C) 4. D) 5. Show Answer Correct Answer: D) 5. 34. Which of the following government agencies is responsible for the Clean Air Act? A) The USDA. B) The EPA. C) The USDOJ. D) The USGS. Show Answer Correct Answer: B) The EPA. 35. What is crucial to do after decontaminating a site or implementing remediation technology systems? A) Ignore the site. B) Continue monitoring the site. C) Remove all equipment. D) Leave the site unattended. Show Answer Correct Answer: B) Continue monitoring the site. 36. What is a significant consequence of increased greenhouse gas emissions? A) Enhanced biodiversity. B) Improved air quality. C) Increased sea levels. D) Decreased global temperatures. Show Answer Correct Answer: C) Increased sea levels. 37. What is the primary impact of underground mining on the Earth's surface? A) Increased vegetation. B) Formation of voids and potential landslides. C) Improved soil quality. D) Enhanced mineral content. Show Answer Correct Answer: B) Formation of voids and potential landslides. 38. Which one of the following substances used in dry cleaning is a better strategy to control environmental pollution?(a) Sulphur dioxide(b) Carbon dioxide(c) Nitrogen dioxide(d) Tetrachloroethylene A) B. B) D. C) C. D) A. Show Answer Correct Answer: A) B. 39. Aluminum toxicity in plants leads to: A) Enhanced root growth. B) Stunted roots and nutrient deficiency. C) Chlorophyll increase. D) Stronger stems. Show Answer Correct Answer: B) Stunted roots and nutrient deficiency. 40. Photochemical smog is also known as A) Oxidizing smog. B) Industrial smog. C) Reducing smog. D) London smog. Show Answer Correct Answer: A) Oxidizing smog. 41. What is the main objective of the session focusing on manufacturing valuable products? A) To propose methods of teaching manufacturing valuable products. B) To explore the role of nitrifying bacteria in agriculture. C) To analyze the effects of nitrogen fertilizers on soil. D) To discuss the properties of natural compost. Show Answer Correct Answer: A) To propose methods of teaching manufacturing valuable products. 42. What is the primary chemical process responsible for the breakdown of pollutants in the atmosphere? A) Photolysis. B) Hydrolysis. C) Reduction. D) Oxidation. Show Answer Correct Answer: D) Oxidation. 43. Bagaimana tingkat pH mempengaruhi kehidupan akuatik? A) Tingkat pH tidak memiliki dampak pada kehidupan akuatik. B) Tingkat pH yang lebih tinggi selalu menguntungkan organisme akuatik. C) Tingkat pH secara signifikan mempengaruhi kehidupan akuatik dengan mempengaruhi ketersediaan nutrisi, kesehatan organisme, dan keseimbangan ekosistem. D) Tingkat pH hanya mempengaruhi suhu air. Show Answer Correct Answer: C) Tingkat pH secara signifikan mempengaruhi kehidupan akuatik dengan mempengaruhi ketersediaan nutrisi, kesehatan organisme, dan keseimbangan ekosistem. 44. How could you extract sodium from molten sodium chloride? A) Decomposition. B) Oxidation. C) Electrolysis. D) Reduction by carbon. Show Answer Correct Answer: C) Electrolysis. 45. What is the best way to reduce carbon monoxide emissions? A) Increase vehicle speed. B) Use alternative fuels. C) Burn more fossil fuels. D) Decrease oxygen levels. Show Answer Correct Answer: B) Use alternative fuels. 46. What substance is used in a blast furnace to reduce iron ore? A) Salt. B) Water. C) Limestone. D) Carbon (coke). Show Answer Correct Answer: D) Carbon (coke). 47. Using resources in such a way that they are preserved for generations to come ..... A) Depletion. B) Sustainability. C) Consumption. D) Exhaustion. Show Answer Correct Answer: B) Sustainability. 48. The second step of ozone formation involves atomic oxygen combining with what molecule? A) 2H2O. B) CO2. C) O2. D) NO2. Show Answer Correct Answer: C) O2. 49. Scientific studies have shown that the mercury content in the northern pike (a fish) is extremely high in some Alberta lakes. The pike is the last link in a food chain. Based on the information given, the scientific study most likely had to do with ..... A) Biodegradation. B) Dispersion. C) Phytoremediation. D) Biomagnification. Show Answer Correct Answer: D) Biomagnification. 50. Rock that forms when sediment from older rocks get pressed and cemented together. A) Sedimentary Rock. B) Metamorphic Rock. C) Igneous Rock. D) None of the above. Show Answer Correct Answer: A) Sedimentary Rock. 51. The number and variety of species in an area ..... A) Ecosystem. B) Biodiversity. C) Habitat. D) Population. Show Answer Correct Answer: B) Biodiversity. 52. What is the primary focus of environmental chemistry? A) Environmental pollution. B) Biochemistry. C) Inorganic chemistry. D) Organic chemistry. Show Answer Correct Answer: A) Environmental pollution. 53. What is the chemical formula for ozone, a molecule found in the stratosphere that protects us from UV radiation? A) $O_3$. B) $O_2$. C) $CO_2$. D) $NO_2$. Show Answer Correct Answer: A) $O_3$. 54. Which gas breaks down ozone molecules in the atmosphere? A) Carbon dioxide. B) Nitrogen. C) Oxygen. D) Chlorine. Show Answer Correct Answer: D) Chlorine. 55. Which of the following gases contribute to acid rain formation? A) Oxygen and nitrogen. B) Carbon dioxide and helium. C) Sulfur dioxide and nitrogen oxides. D) Argon and neon. Show Answer Correct Answer: C) Sulfur dioxide and nitrogen oxides. 56. Which air pollutant is responsible for lung cancer? A) Hydrogen. B) Radon gas. C) Oxygen. D) Helium. Show Answer Correct Answer: B) Radon gas. 57. Which human activity is a major contributor to air pollution? A) Walking. B) Growing trees. C) Fossil fuel combustion. D) Using solar panels. Show Answer Correct Answer: C) Fossil fuel combustion. 58. What is the primary route of entry for cadmium exposure? A) All of the above. B) Inhalation. C) Ingestion. D) Absorption through skin. Show Answer Correct Answer: A) All of the above. 59. Which process converts atmospheric nitrogen ( $N_2$ A) Ammonification. B) Nitrification. C) Nitrogen fixation. D) Denitrification. Show Answer Correct Answer: C) Nitrogen fixation. 60. What is the primary reason energy pyramids rarely contain more than six levels? A) Lack of predators. B) Too many producers. C) Excessive heat loss. D) Insufficient remaining energy. Show Answer Correct Answer: D) Insufficient remaining energy. ← 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