This quiz works best with JavaScript enabled. Home > Class 10 > Class 10 Science Chapter 15 Our Environment – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 15 Our Environment Quiz 9 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The human made synthetic chemical used in refrigerators is A) LPG. B) CFC. C) CH$_{4}$. D) PVC. Show Answer Correct Answer: B) CFC. 2. Biological magnification is accumulation of non biodegradable products at each trophic level A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 3. Which is a threat to a environment A) Growing plants. B) Growing crops. C) Growing population. D) None of these. Show Answer Correct Answer: C) Growing population. 4. In what category of waste do paint, household cleaners, medical waste, and solvents belong? A) Hazardous. B) Compost. C) Municipal solid. D) Industrial. Show Answer Correct Answer: A) Hazardous. 5. The region of the world of living thing is termed as A) Biosphere. B) Ecosystem. C) Food chain. D) Food web. Show Answer Correct Answer: A) Biosphere. 6. Green plants and Algae are the examples of A) Producers. B) Consumers. C) Decomposersers. D) None. Show Answer Correct Answer: A) Producers. 7. What is the main cause of water pollution? A) Invasive species. B) Animals. C) Plants and insects. D) Human impact and decision making. Show Answer Correct Answer: D) Human impact and decision making. 8. In Natural ecosystem, decomposers include A) Only bacteria and Fungi. B) Only microscopic animals. C) Herbivores and carnivores. D) Both b and c. Show Answer Correct Answer: A) Only bacteria and Fungi. 9. How can air pollution be controlled. A) Rain water harvesting. B) Planting more trees. C) Use of windmills. D) None of the above. Show Answer Correct Answer: B) Planting more trees. 10. 1 Read the statement and answer the questions that follow:A non biodegradable toxic chemical has entered into the food chain consisting of 4 trophic levels.(a)Which trophic level of a food chain is likely to be more affected by this incident.? A) First Trophic level. B) Second Trophic level. C) Third Trophic level. D) Fourth Trophic level. Show Answer Correct Answer: D) Fourth Trophic level. 11. What the source of energy for all food chains? A) Earth's core. B) Tides. C) Sun. D) Soil. Show Answer Correct Answer: C) Sun. 12. To reduce pollution in the environment, people should ..... materials. A) Recycle. B) Pollute. C) Throw away. D) Clean. Show Answer Correct Answer: A) Recycle. 13. The rate at which producers in an ecosystem capture and store chemical energy as biomass is called: A) Gross Primary Productivity. B) Net Primary Productivity. C) Net Secondary Productivity. D) Gross Secondary Productivity. Show Answer Correct Answer: A) Gross Primary Productivity. 14. What form is "eating and to be eaten process" in one ecosystem? A) A chain. B) A cycle. C) A pyramid. D) A box. Show Answer Correct Answer: A) A chain. 15. A form of fossil fuel which we use during BBQs by the sea. A) Coal. B) Paper. C) Oil. D) Wood. Show Answer Correct Answer: A) Coal. 16. Pollution ..... A) Is harmful materials put into the environment. B) Found in air, water, and land. C) Effects plants, animals, and people. D) All of the above. Show Answer Correct Answer: D) All of the above. 17. ..... protects us from the harmful ultra violet rays of the sun, A) Nitrogen. B) Ozone. C) Oxygen. D) Carbon-di-oxide. Show Answer Correct Answer: B) Ozone. 18. Which of the following is not an objective of the National Afforestation Programme? A) Restoration of degraded forests. B) Development of forest resources. C) Urbanisation in forest area. D) Improvement in the livelihood of people living near the forest. Show Answer Correct Answer: C) Urbanisation in forest area. 19. Which gas is not responsible for global warming? A) CO2. B) Be. C) NO2. D) N2. Show Answer Correct Answer: D) N2. 20. The accumulation of non-biodegradable substances in a food chain is known as A) Accumulation. B) Eutrophication. C) Pollution. D) Biomagnification. Show Answer Correct Answer: D) Biomagnification. 21. Which of the following is biodegradable? A) Aluminium can. B) DDT. C) Polythene bag. D) Cowdung. Show Answer Correct Answer: D) Cowdung. 22. Ozone is a molecule formed by ..... oxygen atoms A) One. B) Two. C) Three. D) Four. Show Answer Correct Answer: C) Three. 23. Study of how living things interact with each other and with their nonliving environments A) Sustainability. B) Ecology. C) Environmental Science. D) Renewable Resource. Show Answer Correct Answer: B) Ecology. 24. There is ..... of energy as we go from one trophic level to the next A) A gain. B) An increase. C) A loss. D) No change. Show Answer Correct Answer: C) A loss. 25. Ozone is formed by A) Combining of three atoms of oxygen in presence of UV rays. B) Combining of three atoms of nitrogen in presence of UV rays. C) Combining of three atoms of carbon. D) Combining of three atoms of oxygen. Show Answer Correct Answer: A) Combining of three atoms of oxygen in presence of UV rays. ← PreviousNext →Related QuizzesClass 10 Science Chapter 15 Our Environment Quiz 1Class 10 Science Chapter 15 Our Environment Quiz 2Class 10 Science Chapter 15 Our Environment Quiz 3Class 10 Science Chapter 15 Our Environment Quiz 4Class 10 Science Chapter 15 Our Environment Quiz 5Class 10 Science Chapter 15 Our Environment Quiz 6Class 10 Science Chapter 15 Our Environment Quiz 7Class 10 Science Chapter 15 Our Environment Quiz 8Class 10 Science Chapter 15 Our Environment Quiz 10Class 10 Science Chapter 15 Our Environment Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books