This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry – Quiz 38 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Chemistry (Part Ii) Chapter 14 Environmental Chemistry Quiz 38 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the ozone layer considered as in the stratosphere? A) Protective shield from UV-light. B) Heat source. C) Air pollutant. D) Oxygen supplier. Show Answer Correct Answer: A) Protective shield from UV-light. 2. Air Pollution causes ..... A) Typhoid. B) Fatigue. C) Anger. D) Throat Inflammation. Show Answer Correct Answer: D) Throat Inflammation. 3. A 0.5 L water sample from the Flow River contains 50 mg of barium. Calculate the concentration of barium in ppm. A) 0.1 ppm. B) 100 ppm. C) 0.05 ppm. D) 50 ppm. Show Answer Correct Answer: B) 100 ppm. 4. Bromothymol blue will appear yellow when mixed with A) Lemon juice. B) Baking soda. C) Drain cleaner. D) Distilled water. Show Answer Correct Answer: A) Lemon juice. 5. Which of the following is NOT one of the three major plant nutrients mentioned? A) Nitrogen. B) Phosphorus. C) Potassium. D) Calcium. Show Answer Correct Answer: D) Calcium. 6. What chemical is responsible for breaking up the ozone? A) CFCs. B) Carbon Dioxide. C) Nitrogen. D) Oxygen. Show Answer Correct Answer: A) CFCs. 7. What is the effect of an increased greenhouse effect on Earth's climate? A) Global cooling. B) Global warming. C) Acid rain. D) Ozone layer depletion. Show Answer Correct Answer: B) Global warming. 8. A rapid decrease in pH due to increased run-off in the spring A) Spring run off shock. B) Spring base shock. C) Spring shock. D) Spring acid shock. Show Answer Correct Answer: D) Spring acid shock. 9. Which of the following is an example of an endothermic reaction? A) Burning of fossil fuels. B) Cellular respiration. C) Photosynthesis. D) Combustion of wood. Show Answer Correct Answer: C) Photosynthesis. 10. What are the main sources of arsenic exposure? A) Mining and smelting of gold. B) Burning of coal. C) Leachate from abandoned gold mines. D) All of the above. Show Answer Correct Answer: D) All of the above. 11. Anhydrous cobalt(II) chloride can be used to test presence of water. What is the colour change of the cobalt(II) chloride paper when there is water? A) Blue to pink. B) Pink to blue. C) White to blue. D) Blue to white. Show Answer Correct Answer: A) Blue to pink. 12. Rock that forms when pressure and temperature change existing rock. A) Igneous Rock. B) Sedimentary Rock. C) Metamorphic Rock. D) Rock Cycle. Show Answer Correct Answer: C) Metamorphic Rock. 13. Distilled water does not contain any insoluble impurities, soluble impurities and microorganisms. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 14. BOD stands for(a) Biochemical Oxidation Demand(b) Biological Oxygen Demand(c) Biochemical Oxygen Demand(d) Bacterial Oxidation Demand. A) A. B) B. C) C. D) D. Show Answer Correct Answer: C) C. 15. The amount of toxin needed to poison an animal is often dependent on what factor? A) Weight of the animal. B) Time of day. C) The age of the animal. D) An animals normal eating habits. Show Answer Correct Answer: A) Weight of the animal. 16. The smog is essentially caused by the presence of A) O2 and O3. B) O2 and N2. C) Oxides of sulphur and nitrogen. D) O3 and N2. Show Answer Correct Answer: C) Oxides of sulphur and nitrogen. 17. What is the cleanup process officially used by? A) The Environmental Protection Agency. B) The Superfund. C) The World Health Organization. D) The Red Cross. Show Answer Correct Answer: B) The Superfund. 18. Which of the following is a component of environmental pollution? A) Thermodynamics. B) Quantum mechanics. C) Electrochemistry. D) Air pollution. Show Answer Correct Answer: D) Air pollution. 19. Overtime, the water in a river will dissolve a portion of the rocks on the bottom of the riverbed. The type of weathering that causes the rock to dissolve is? A) Physical weathering. B) Chemical weathering. C) All the above. D) None of the above. Show Answer Correct Answer: B) Chemical weathering. 20. Which layer contains most of the atmospheric mass? A) Troposphere. B) Stratosphere. C) Mesosphere. D) Exosphere. Show Answer Correct Answer: A) Troposphere. 21. What role do plants play in reducing air pollution? A) Plants have no effect on air quality. B) Plants reduce air pollution by absorbing carbon dioxide, releasing oxygen, filtering pollutants, and absorbing toxins. C) Plants only absorb sunlight and do not filter air pollutants. D) Plants produce more carbon dioxide than oxygen. Show Answer Correct Answer: B) Plants reduce air pollution by absorbing carbon dioxide, releasing oxygen, filtering pollutants, and absorbing toxins. 22. In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship? A) Both of the solution are Bases. B) Both of the solution are Acids. C) The Baking soda is an acid and the Bleach is a base. D) The baking soda is a base and the Bleach is an Acid. Show Answer Correct Answer: A) Both of the solution are Bases. 23. In which form is carbon released during decomposition? A) Carbon monoxide. B) Carbonate. C) Carbon dioxide. D) Carbohydrates. Show Answer Correct Answer: C) Carbon dioxide. 24. A force that holds two atoms together A) Chemical bond. B) Gravitational force. C) Magnetic attraction. D) Nuclear force. Show Answer Correct Answer: A) Chemical bond. 25. Which of the following is a major contributor to eutrophication in aquatic systems? A) Heavy metals. B) Nutrient runoff (nitrates and phosphates). C) Acid rain. D) Ozone depletion. Show Answer Correct Answer: B) Nutrient runoff (nitrates and phosphates). ← 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