This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 19 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What cause water pollution? A) People dump things in the countryside. B) Factories produce too much waste water and oil. C) Factories produce good products. D) Factories produce too much smoke. Show Answer Correct Answer: B) Factories produce too much waste water and oil. 2. Cleaning up heavy metals, pesticides, hydrocarbons or solvents by the use of plants ..... A) Bioremediation. B) Biomagnification. C) Phytoremediation. D) Photolysis. Show Answer Correct Answer: C) Phytoremediation. 3. In a chemical reaction, when the sum of enthalpies of reactants is higher than products, the reaction is: A) Endothermic. B) Neutral. C) Exothermic. D) Reversible. Show Answer Correct Answer: C) Exothermic. 4. What should be observed when the oil/sugar mixture is poured into water? A) The mixture evaporates. B) The mixture spreads. C) The mixture solidifies. D) The mixture changes color. Show Answer Correct Answer: B) The mixture spreads. 5. Plants are better at extracting nutrients because: A) They have specialized root systems. B) They rely on animals for nutrients. C) They do not need nutrients. D) They grow in nutrient-rich environments. Show Answer Correct Answer: A) They have specialized root systems. 6. Which chemical indicator is directly related to the ability of aquatic organisms to breathe? A) Nitrogen fixation. B) Dissolved oxygen (DO). C) Hydrolysis. D) Osmosis. Show Answer Correct Answer: B) Dissolved oxygen (DO). 7. Which of the following nutrients are not usually found in fertilizer? A) Phosphorus. B) Nitrogen. C) Oxygen. D) Potassium. Show Answer Correct Answer: C) Oxygen. 8. Why doesn't aluminium corrode when exposed to air? A) Aluminium reacts with oxygen to form an impervious layer of aluminium oxide. B) Aluminium is unreactive to air. C) Aluminium forms a porous layer that allows oxygen to bypass the metal. D) Aluminium is a hard metal and does not corrode easily. Show Answer Correct Answer: A) Aluminium reacts with oxygen to form an impervious layer of aluminium oxide. 9. Which type of rock is most likely to contain fossils? A) Sedimentary. B) Igeneous. C) Metamorphic. D) All rocks. Show Answer Correct Answer: A) Sedimentary. 10. Which pair correctly matches an essential macronutrient with how plants obtain it, based on the material? A) Nitrogen-absorbed by plant roots as fixed compounds produced by bacteria. B) Carbon-absorbed from soil minerals like quartz. C) Phosphorus-obtained only by animals and not by plants. D) Magnesium-synthesized by plants internally without uptake from the environment. Show Answer Correct Answer: A) Nitrogen-absorbed by plant roots as fixed compounds produced by bacteria. 11. What is the major indoor air pollutant in homes using biomass fuels? A) Carbon monoxide. B) Ozone. C) Helium. D) Nitrogen. Show Answer Correct Answer: A) Carbon monoxide. 12. The process whereby chemicals build up in an organism over time A) Bioaccumulation. B) Biomagnification. C) All the above. D) None of the above. Show Answer Correct Answer: A) Bioaccumulation. 13. Which of the following would increase the rate of biodegradation? A) Increased temperature and moisture. B) Clean the composter with bleach. C) Cooler, drier conditions. D) Line the composter with plastic or clay. Show Answer Correct Answer: A) Increased temperature and moisture. 14. Why is electrolysis expensive? A) It requires sunlight. B) It uses a lot of electricity. C) It needs fuel. D) It pollutes the soil. Show Answer Correct Answer: B) It uses a lot of electricity. 15. Which device helps reduce vehicle emissions? A) Incinerator. B) Air filter. C) Catalytic converter. D) Oxygen tank. Show Answer Correct Answer: C) Catalytic converter. 16. The permissible limit of fluoride ion in drinking water is A) Less than 1 ppm. B) Greater than 1 ppm. C) 1-2 ppm. D) Zero ppm. Show Answer Correct Answer: C) 1-2 ppm. 17. What would be evidence that a lake is being polluted by nearby farms? A) High DO. B) High nitrates. C) Low turbidity. D) Low temperature. Show Answer Correct Answer: B) High nitrates. 18. What is one method to teach about environmental pollution? A) Standardized testing. B) Group discussions. C) Lecturing only. D) Individual assignments. Show Answer Correct Answer: B) Group discussions. 19. What is the role of some chemicals in the environment? A) They are harmful to all living things. B) They are important for maintaining life and can also be harmful to the environment. C) They are only used for industrial purposes. D) They have no impact on living organisms. Show Answer Correct Answer: B) They are important for maintaining life and can also be harmful to the environment. 20. Which of the following metals is extracted using electricity? A) Zinc. B) Lead. C) Sodium. D) Iron. Show Answer Correct Answer: C) Sodium. 21. A chemical used to remove unwanted organisms A) Pollutant. B) Herbicide. C) Fertilizer. D) Pesticide. Show Answer Correct Answer: D) Pesticide. 22. Atmospheric circulation is A) Movement of earth at all levels of the litosphere over all parts of the planet. B) Movement of air at all levels of the atmosphere over all parts of the planet. C) Movement of water at all levels of the hydrosphere over all parts of the planet. D) Movement of fire at all levels of the atmosphere over all parts of the planet. Show Answer Correct Answer: B) Movement of air at all levels of the atmosphere over all parts of the planet. 23. The second step of ozone formation involves monatomic oxygen combining with what molecule? A) CO2. B) O2. C) NO2. D) 2H2O. Show Answer Correct Answer: B) O2. 24. Permanent hardness in water can be removed by: A) Boiling. B) Freezing. C) Using an ion-exchange resin. D) Adding acid. Show Answer Correct Answer: C) Using an ion-exchange resin. 25. Many chemicals in cigarettes are considered carcinogenic because they cause what? A) Emphysema. B) Cancer. C) Heart disease. D) Liver Failure. Show Answer Correct Answer: B) Cancer. ← 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