This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 33 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 33 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Photochemical smog is also known as A) Industrial smog. B) London smog. C) Oxidizing smog. D) Reducing smog. Show Answer Correct Answer: C) Oxidizing smog. 2. 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 discuss the properties of natural compost. D) To analyze the effects of nitrogen fertilizers on soil. Show Answer Correct Answer: A) To propose methods of teaching manufacturing valuable products. 3. What is the primary chemical process responsible for the breakdown of pollutants in the atmosphere? A) Photolysis. B) Hydrolysis. C) Oxidation. D) Reduction. Show Answer Correct Answer: C) Oxidation. 4. Bagaimana tingkat pH mempengaruhi kehidupan akuatik? A) Tingkat pH hanya mempengaruhi suhu air. B) Tingkat pH secara signifikan mempengaruhi kehidupan akuatik dengan mempengaruhi ketersediaan nutrisi, kesehatan organisme, dan keseimbangan ekosistem. C) Tingkat pH yang lebih tinggi selalu menguntungkan organisme akuatik. D) Tingkat pH tidak memiliki dampak pada kehidupan akuatik. Show Answer Correct Answer: B) Tingkat pH secara signifikan mempengaruhi kehidupan akuatik dengan mempengaruhi ketersediaan nutrisi, kesehatan organisme, dan keseimbangan ekosistem. 5. How could you extract sodium from molten sodium chloride? A) Reduction by carbon. B) Electrolysis. C) Decomposition. D) Oxidation. Show Answer Correct Answer: B) Electrolysis. 6. What is the best way to reduce carbon monoxide emissions? A) Use alternative fuels. B) Increase vehicle speed. C) Burn more fossil fuels. D) Decrease oxygen levels. Show Answer Correct Answer: A) Use alternative fuels. 7. What substance is used in a blast furnace to reduce iron ore? A) Limestone. B) Water. C) Carbon (coke). D) Salt. Show Answer Correct Answer: C) Carbon (coke). 8. Using resources in such a way that they are preserved for generations to come ..... A) Sustainability. B) Depletion. C) Exhaustion. D) Consumption. Show Answer Correct Answer: A) Sustainability. 9. The second step of ozone formation involves atomic oxygen combining with what molecule? A) CO2. B) O2. C) NO2. D) 2H2O. Show Answer Correct Answer: B) O2. 10. 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) Biomagnification. B) Phytoremediation. C) Biodegradation. D) Dispersion. Show Answer Correct Answer: A) Biomagnification. 11. 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. 12. The number and variety of species in an area ..... A) Biodiversity. B) Ecosystem. C) Habitat. D) Population. Show Answer Correct Answer: A) Biodiversity. 13. What is the primary focus of environmental chemistry? A) Inorganic chemistry. B) Biochemistry. C) Environmental pollution. D) Organic chemistry. Show Answer Correct Answer: C) Environmental pollution. 14. What is the chemical formula for ozone, a molecule found in the stratosphere that protects us from UV radiation? A) $O_2$. B) $O_3$. C) $CO_2$. D) $NO_2$. Show Answer Correct Answer: B) $O_3$. 15. Which gas breaks down ozone molecules in the atmosphere? A) Oxygen. B) Chlorine. C) Nitrogen. D) Carbon dioxide. Show Answer Correct Answer: B) Chlorine. 16. 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. 17. Which air pollutant is responsible for lung cancer? A) Radon gas. B) Oxygen. C) Hydrogen. D) Helium. Show Answer Correct Answer: A) Radon gas. 18. Which human activity is a major contributor to air pollution? A) Walking. B) Fossil fuel combustion. C) Using solar panels. D) Growing trees. Show Answer Correct Answer: B) Fossil fuel combustion. 19. 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. 20. Which process converts atmospheric nitrogen ( $N_2$ A) Denitrification. B) Nitrogen fixation. C) Ammonification. D) Nitrification. Show Answer Correct Answer: B) Nitrogen fixation. 21. What is the primary reason energy pyramids rarely contain more than six levels? A) Lack of predators. B) Insufficient remaining energy. C) Too many producers. D) Excessive heat loss. Show Answer Correct Answer: B) Insufficient remaining energy. 22. A compound that dissolves in water to form a solution with a pH lower than 7 ..... A) Acid. B) Base. C) Neutral. D) Sour. Show Answer Correct Answer: A) Acid. 23. A substance that speeds up a chemical reaction by lowering activation energy ..... A) Catalyst. B) Inhibitor. C) Reactant. D) Product. Show Answer Correct Answer: A) Catalyst. 24. What is the main goal of cleaner production? A) To increase waste. B) To optimize resource efficiency. C) To reduce product quality. D) To enhance pollution. Show Answer Correct Answer: B) To optimize resource efficiency. 25. *A chemical with a LD50 of 2700mg/kg means A) *50 animals are killed by that dose. B) *animals are killed by 50% of that chemical dose. C) *the chemical kills 50% of the animals with that dose. D) *the animals live for 50% of their lifetime with that does. Show Answer Correct Answer: C) *the chemical kills 50% of the animals with that dose. ← PreviousNext →Related 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 8Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 9Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books