This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 41 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 41 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which statement best describes chemicals in the environment? A) Only living things are made of chemicals, while non-living things are not. B) Everything in the environment-living or non-living-is made of chemicals. C) Chemicals exist only in water and air, not in soil or rocks. D) Only man-made materials count as chemicals in environmental science. Show Answer Correct Answer: B) Everything in the environment-living or non-living-is made of chemicals. 2. The three elements commonly found in fertilizers are nitrogen, phosphorus, and potassium. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. Which of these processes absorbs carbon dioxide? A) Respiration. B) Combustion of fossil fuels. C) Photosynthesis. D) None of the above. Show Answer Correct Answer: C) Photosynthesis. 4. *A substance has a pH reading of 3.1 is considered A) *strong base. B) *weak base. C) Neutral. D) *weak acid. E) *strong acid. Show Answer Correct Answer: E) *strong acid. 5. Which gas is most associated with global warming? A) Oxygen. B) Carbon dioxide. C) Hydrogen. D) Helium. Show Answer Correct Answer: B) Carbon dioxide. 6. When copper and magnesium sulphate are mixed together, there is no reaction. Why? A) Magnesium is more reactive than copper. B) Copper is more reactive than magnesium. C) Copper never reacts with metal salts. D) Magnesium Sulphate never reacts with metals. Show Answer Correct Answer: A) Magnesium is more reactive than copper. 7. The process in which bacteria in the soil convert nitrogen from the atmosphere is called A) The Atmosphere Cycle. B) The Air Cycle. C) The Pollution Cycle. D) The Nitrogen Cycle. Show Answer Correct Answer: D) The Nitrogen Cycle. 8. Why is recycling aluminium good for the environment? A) It's radioactive. B) It's expensive to make new aluminium. C) It reduces food waste. D) Aluminium absorbs heat. Show Answer Correct Answer: B) It's expensive to make new aluminium. 9. Discuss the impact of deforestation on greenhouse gas emissions. A) Deforestation reduces greenhouse gas emissions by absorbing excess carbon dioxide. B) Deforestation has no impact on greenhouse gas emissions. C) Deforestation increases greenhouse gas emissions by releasing stored carbon into the atmosphere. D) Deforestation leads to a decrease in greenhouse gas emissions due to soil degradation. Show Answer Correct Answer: C) Deforestation increases greenhouse gas emissions by releasing stored carbon into the atmosphere. 10. Which disease is commonly linked to air pollution? A) Diabetes. B) Asthma. C) Arthritis. D) Malaria. Show Answer Correct Answer: B) Asthma. 11. Which is a natural source of greenhouse gases? A) Aerosols. B) Deforestation. C) Volcanic eruptions. D) Burning fossil fuels. Show Answer Correct Answer: C) Volcanic eruptions. 12. Acid-base indicators change color based on what property of a solution? A) Temperature. B) Volume. C) PH. D) Density. Show Answer Correct Answer: C) PH. 13. Bagaimana individu dapat mengurangi jejak karbon mereka? A) Sering mengemudi. B) Gunakan lebih banyak produk plastik. C) Gunakan transportasi umum, kurangi penggunaan energi, makan lebih sedikit daging, daur ulang, dan dukung energi terbarukan. D) Menambah konsumsi daging. Show Answer Correct Answer: C) Gunakan transportasi umum, kurangi penggunaan energi, makan lebih sedikit daging, daur ulang, dan dukung energi terbarukan. 14. Which of the following have been changed or altered due to climate change? A) Droughts. B) Flooding. C) Melting of polar ice caps. D) All of the above. Show Answer Correct Answer: D) All of the above. 15. What are the impact of algae bloom to the environment? A) Algae blooms can deplete oxygen in the water, release toxins, and harm aquatic life. B) Algae blooms increase oxygen levels in the water. C) Algae blooms have no impact on aquatic life. D) Algae blooms help in cleaning the water. Show Answer Correct Answer: A) Algae blooms can deplete oxygen in the water, release toxins, and harm aquatic life. 16. Nitrogen oxides are primarily emitted from: A) Industrial boilers and vehicle exhausts. B) Oceans. C) Forests. D) Volcanoes. Show Answer Correct Answer: A) Industrial boilers and vehicle exhausts. 17. Which of the following are proteins? A) Arugula. B) Strawberries. C) Tortilla. D) Beans, eggs, chicken. Show Answer Correct Answer: D) Beans, eggs, chicken. 18. What is prepared by one step oxidation of ethene A) Ethane C2H6. B) Ethoxide C2H5O. C) Ethanol C2H5OH. D) Ethanal CH3CHO. Show Answer Correct Answer: D) Ethanal CH3CHO. 19. Suppose you are given a water sample and asked to test for both nitrate and phosphate ions. Outline the main difference in the reagents used for each test. A) Both tests use only deionised water. B) Nitrate test uses iron(II) sulfate and sulfuric acid, while phosphate test uses ammonium molybdate reagent. C) Both tests use ammonium molybdate reagent. D) Nitrate test uses ammonium molybdate reagent, while phosphate test uses iron(II) sulfate and sulfuric acid. Show Answer Correct Answer: B) Nitrate test uses iron(II) sulfate and sulfuric acid, while phosphate test uses ammonium molybdate reagent. 20. What is the main source of nitric oxide in the upper layer of the atmosphere? A) Human activities. B) Forest fires. C) Dust storms. D) Lightning & thunderstorms. Show Answer Correct Answer: D) Lightning & thunderstorms. 21. The layer of atmosphere between 10 km and 50 km above the sea level is called(a) thermosphere(b) mesosphere(c) stratosphere(d) troposphere. A) A. B) B. C) C. D) D. Show Answer Correct Answer: C) C. 22. *Sulfur Dioxide causes A) Asthma. B) Smog. C) Acid Rain. D) Death. Show Answer Correct Answer: C) Acid Rain. 23. How would you best extract iron from haematite (iron ore)? A) Reduction by carbon. B) Electrolysis. C) Decomposition. D) Oxidation. Show Answer Correct Answer: A) Reduction by carbon. 24. Which of these is not a greenhouse gas? A) Ozone. B) Methane. C) Carbon dioxide. D) None of these. Show Answer Correct Answer: D) None of these. 25. The pure metal at higher energy will always have a tendency to go into the higher energy state by the attack of environment. A) True. B) False. C) All the above. D) None of the above. 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