This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 27 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 27 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which statement defines an organic compound? A) A chemical compound that does not contain carbon, such as minerals and salts. B) A chemical compound containing carbon, such as carbohydrates, proteins, lipids, and nucleic acids. C) A compound that dissolves in water to form acidic solutions. D) A molecule that always tastes sour and is corrosive. Show Answer Correct Answer: B) A chemical compound containing carbon, such as carbohydrates, proteins, lipids, and nucleic acids. 2. Coal, Oil and Natural gas are all examples of ..... A) Pollutants. B) Fossil fuels. C) Effluents. D) Heavy metals. Show Answer Correct Answer: B) Fossil fuels. 3. Colorimetry works on the principle that: A) The darker the colour, the higher the concentration. B) Colourless solutions are more concentrated. C) Light passes equally through all solutions. D) Colour doesn't affect light absorption. Show Answer Correct Answer: A) The darker the colour, the higher the concentration. 4. Dissolved Oxygen (DO) in water refers to which of the following? A) Oxygen bubbles visible in turbulent water. B) The amount of oxygen dissolved in water, essential for aquatic life survival. C) The oxygen produced by plants during photosynthesis only. D) The oxygen concentration in the atmosphere above a lake. Show Answer Correct Answer: B) The amount of oxygen dissolved in water, essential for aquatic life survival. 5. Acid rain is an example of: A) Transboundary pollution. B) Local pollution only. C) Natural emission. D) Indoor pollution. Show Answer Correct Answer: A) Transboundary pollution. 6. What are some examples of ecosystems that are particularly vulnerable to climate change? A) Temperate forests. B) Grasslands. C) Deserts. D) Coral reefs, Arctic tundra, mangroves. Show Answer Correct Answer: D) Coral reefs, Arctic tundra, mangroves. 7. Where are fossil fuels commonly burnt? A) In homes, vehicles, and industrial plants. B) In forests and oceans. C) In schools and hospitals. D) In parks and gardens. Show Answer Correct Answer: A) In homes, vehicles, and industrial plants. 8. We can reduce our need for fossil fuels by developing A) Alternative energy sources. B) Natural gas lines. C) Gasoline powered cars. D) New oil sources. Show Answer Correct Answer: A) Alternative energy sources. 9. Photochemical smog occurs in warm, dry and sunny climate. One of the following is not amongst the components of photochemical smog, identify it. A) NO$_{2}$. B) O$_{3}$. C) Unsaturated hydrocarbon. D) SO$_{2}$. Show Answer Correct Answer: D) SO$_{2}$. 10. Which organic compound is most involved in cell division? A) Proteins. B) Carbohydrates. C) Nucleic acids. D) Lipds. Show Answer Correct Answer: C) Nucleic acids. 11. What are the environmental impacts of pesticide use on biodiversity? A) Pesticides only affect agricultural pests without impacting other species. B) Pesticides have no effect on ecosystems and maintain genetic diversity. C) Pesticides negatively impact biodiversity by harming non-target species, disrupting ecosystems, and reducing genetic diversity. D) Pesticides enhance biodiversity by promoting species growth and resilience. Show Answer Correct Answer: C) Pesticides negatively impact biodiversity by harming non-target species, disrupting ecosystems, and reducing genetic diversity. 12. What are the objectives of the session on acid-base indicators? A) To plan methods of teaching environmental pollution. B) To define acid-base indicators and prepare natural indicators from plants. C) To list some manufacturing industries in Ethiopia. D) To comprehend the components that make the environment. Show Answer Correct Answer: B) To define acid-base indicators and prepare natural indicators from plants. 13. The atmosphere is made up primarily of A) Nitrogen. B) Oxygen. C) Carbon Dioxide. D) Water Vapor. Show Answer Correct Answer: A) Nitrogen. 14. What is the concentration, in ppm, of lead in a 6 kg (6 000 000 mg) solution that contains 12 mg of lead? A) 1.0 ppm. B) 2.0 ppm. C) 3.0 ppm. D) 4.0 ppm. Show Answer Correct Answer: B) 2.0 ppm. 15. Explain the role of particulate matter in air quality. A) Particulate matter is solely beneficial for environmental growth. B) Particulate matter significantly impacts air quality by affecting human health and environmental conditions. C) Particulate matter has no effect on air quality or health. D) Particulate matter improves air quality by filtering pollutants. Show Answer Correct Answer: B) Particulate matter significantly impacts air quality by affecting human health and environmental conditions. 16. Yellow phosphorous is A) Neurotoxic. B) Hepatotoxic. C) Nephrotoxic. D) All of the above. Show Answer Correct Answer: D) All of the above. 17. Which of the following statements best explains the high levels of pesticide in the whooping crane? A) The whooping crane's skin absorbed the pesticide. B) The whooping crane swam in contaminated lake water. C) The whooping crane fed on pesticide-treated grass near the lake. D) The whooping crane's primary food source was the fish from the lake. Show Answer Correct Answer: D) The whooping crane's primary food source was the fish from the lake. 18. Which equation represents the formation of sulfuric acid in acid rain? A) CO2 + H2O $\rightarrow$ H2CO3. B) SO3 + H2O $\rightarrow$ H2SO4. C) O2 + N2 $\rightarrow$ NO2. D) NO2 + H2O $\rightarrow$ HNO3. Show Answer Correct Answer: B) SO3 + H2O $\rightarrow$ H2SO4. 19. People can reduce waste by using products that are A) Nonrenewable. B) Fossil fuels. C) Biodegradable. D) Invasive. Show Answer Correct Answer: C) Biodegradable. 20. The term B.O.D. stands for: A) Biological Oxidation Depth. B) Biochemical Oxygen Demand. C) Basic Oxygen Determination. D) Base Oxygen Degree. Show Answer Correct Answer: B) Biochemical Oxygen Demand. 21. Colourless, odourless gas that can cause headaches, sleepiness and even death when inhaled by humans ..... A) Carbon dioxide. B) Carbon monoxide. C) Sulfur dioxide. D) Nitrogen oxides. Show Answer Correct Answer: B) Carbon monoxide. 22. Macronutrients are: A) Elements and compounds needed by plants and animals in relatively large amounts for growth and development (e.g., nitrogen, phosphorus, potassium). B) Elements needed in very small amounts; both deficiency and excess can be harmful (e.g., selenium). C) Compounds that dissolve in water with pH less than 7. D) Gases fixed by bacteria into usable forms for plants. Show Answer Correct Answer: A) Elements and compounds needed by plants and animals in relatively large amounts for growth and development (e.g., nitrogen, phosphorus, potassium). 23. What is the primary source of energy in most ecosystems? A) Chemical energy. B) Solar energy. C) Thermal energy. D) Kinetic energy. Show Answer Correct Answer: B) Solar energy. 24. Which energy source produces the least greenhouse gases? A) Solar energy. B) Coal. C) Petroleum. D) Diesel. Show Answer Correct Answer: A) Solar energy. 25. In water quality assessment, biological indicators are useful because A) They measure pH and nitrogen directly. B) Different species thrive in different conditions, revealing ecosystem health. C) They eliminate the need for chemical testing. D) They indicate only temperature changes. Show Answer Correct Answer: B) Different species thrive in different conditions, revealing ecosystem health. ← 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