This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 42 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 42 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Apa parameter yang biasanya diuji dalam analisis kualitas air? A) Salinitas. B) PH, oksigen terlarut, kekeruhan, total padatan terlarut, nutrisi, logam berat, kontaminan mikroba. C) Konsentrasi klorofil. D) Suhu air. Show Answer Correct Answer: B) PH, oksigen terlarut, kekeruhan, total padatan terlarut, nutrisi, logam berat, kontaminan mikroba. 2. Visibility reduction due to acid aerosols occurs because: A) Aerosols scatter light. B) They absorb CO2. C) They produce O3. D) They dissolve rapidly. Show Answer Correct Answer: A) Aerosols scatter light. 3. The material that an organism lives or moves on ..... A) Ground. B) Nutrients. C) Substrate. D) Rock. Show Answer Correct Answer: C) Substrate. 4. A displacement reaction is a chemical reaction in which a ..... element displaces another element A) Less. B) The same. C) Moore. D) More. Show Answer Correct Answer: D) More. 5. Which does NOT cause acid rain? A) Erupting volcanoes. B) Burning fossil fuels-coal, oil, gas. C) Electric cars. D) Car engines. Show Answer Correct Answer: C) Electric cars. 6. Which term describes the breakdown of substances by living things? A) Biomagnification. B) Biodegradation. C) Diffusion. D) Osmosis. Show Answer Correct Answer: B) Biodegradation. 7. What is the time that it takes for half of the chemical or toxin to be expelled from the body? A) Expulsion rate. B) Metabolic time. C) Half life. D) Digestive period. Show Answer Correct Answer: C) Half life. 8. Lead in water is what kind of water pollution category? A) Organic. B) Inorganic. C) Nutrient. D) Disease-causing organisms. Show Answer Correct Answer: B) Inorganic. 9. *2.5mL of sodium hydroxide is dissolved in 997.5mL to make a total volume of 1000mL. What is the concentration? A) *250 ppm. B) *2 500 ppm. C) *25 000 ppm. D) *25 ppm. Show Answer Correct Answer: B) *2 500 ppm. 10. What is to recycle? A) To transform things into materials for new things. B) To use something more than once. C) Use and produce less things. D) None of the above. Show Answer Correct Answer: A) To transform things into materials for new things. 11. *The nitrogen cycle generates nitrogen from which of the following processes? A) *lightning, decomposition, photosynthesis. B) *lightning, decomposition, bacteria. C) *photosynthesis, decomposition, bacteria. D) *photosynthesis, lightning, bacteria. Show Answer Correct Answer: B) *lightning, decomposition, bacteria. 12. Which of the following contributes least to global warming? A) Wind turbines. B) Car engines. C) Power plants. D) Deforestation. Show Answer Correct Answer: A) Wind turbines. 13. Polimer termoplastik memiliki ciri-ciri berikut, kecuali ..... A) Sedikit berikatan silang. B) Dapat melunak jika dipanaskan. C) Keras dan rapuh. D) Mudah ditekuk. Show Answer Correct Answer: C) Keras dan rapuh. 14. Effluent is: A) Purified wastewater. B) Sewage. C) Storm runoff. D) Septic sludge. Show Answer Correct Answer: A) Purified wastewater. 15. Which of the following is a common method for reducing nitrogen oxides (NOx) emissions from industrial sources? A) Catalytic converters. B) Electrostatic precipitators. C) Scrubbers. D) Activated carbon filters. Show Answer Correct Answer: A) Catalytic converters. 16. The process by which bacteria break down harmful chemicals in the environment is called ..... A) Biodegradation. B) Photolysis. C) Phytoremediation. D) Dispersion. Show Answer Correct Answer: A) Biodegradation. 17. The burning of which fuel is the main source of industrial smog? A) Oil. B) Coal. C) Natural Gas. D) Biomass. Show Answer Correct Answer: B) Coal. 18. What is to reduce A) To transform things into materials for new things. B) To use something more than once. C) To use and produce less things. D) None of the above. Show Answer Correct Answer: C) To use and produce less things. 19. Which of the following is a renewable fuel? A) Natural gas. B) Oil. C) Wood. D) None of the above. Show Answer Correct Answer: C) Wood. 20. Which of the following is a heavy metal pollutant? A) Sodium. B) Lead. C) Calcium. D) Potassium. Show Answer Correct Answer: B) Lead. 21. What is the balanced chemical equation for the complete combustion of methane ( $CH_4$ A) $CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O$. B) $CH_4 + O_2 \rightarrow CO + 2H_2O$. C) $2CH_4 + 3O_2 \rightarrow 2CO + 4H_2O$. D) $CH_4 + 4O_2 \rightarrow CO_2 + 4H_2O$. Show Answer Correct Answer: A) $CH_4 + 2O_2 \rightarrow CO_2 + 2H_2O$. 22. Enhanced Greenhouse Effect is defined in the material as: A) Natural absorption of UV radiation by ozone. B) Increased warming of Earth's atmosphere caused by higher concentrations of greenhouse gases from human activities. C) Weather variations due to seasonal changes. D) Reduction of sulfur dioxide through scrubbing. Show Answer Correct Answer: B) Increased warming of Earth's atmosphere caused by higher concentrations of greenhouse gases from human activities. 23. Which term best matches its definition: "Organisms such as aquatic invertebrates and microorganisms used to assess the health of water ecosystems" ? A) Chemical indicators. B) Biological indicators. C) Dissolved oxygen. D) Substrate. Show Answer Correct Answer: B) Biological indicators. 24. What is a misconception about green chemistry? A) It is only for chemists. B) It is relevant to everyday life. C) It focuses on sustainability. D) It is based on scientific principles. Show Answer Correct Answer: A) It is only for chemists. 25. Chronic toxicosis typically refers to exposure longer than what time period? A) 24 hours. B) 7 days. C) 5 weeks. D) 3 months. Show Answer Correct Answer: D) 3 months. ← 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