This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Our Environment > Class 10 Science Chapter 15 Our Environment – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 15 Our Environment Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which is not a natural Ecosystem? A) Desert. B) Aquarium. C) Forest. D) None of these. Show Answer Correct Answer: B) Aquarium. 2. Which of these does not belong to biotic component? A) Parasites. B) Bacteria. C) Fungi. D) Soil. Show Answer Correct Answer: D) Soil. 3. Which of the two in the following sets belong to the same trophic level? A) Frog ; Lizard. B) Grass; Grasshopper. C) Hawk ; Rat. D) Goat; Spider. Show Answer Correct Answer: A) Frog ; Lizard. 4. Flow of energy in an ecosystem is always A) Unidirectional. B) No specific direction. C) Bidirectional. D) Multidirectional. Show Answer Correct Answer: A) Unidirectional. 5. Which of the following is a biodegradable? A) Polythene. B) Plastics. C) Plants. D) Glass. Show Answer Correct Answer: C) Plants. 6. Natural environment can be divided into ..... types. A) Three. B) Four. C) Two. D) Five. Show Answer Correct Answer: A) Three. 7. In a given food chain the amount of energy at fourth trophic level is 5 KJ, what will be the energy at producer level? A) 50kg. B) 5kg. C) 500kg. D) 5000kg. Show Answer Correct Answer: D) 5000kg. 8. ASSERTION:Aquariums are known as man made ecosystems.REASON:Aquariums are created and maintained by humans. A) Both A & R are true. R is the correct explanation of A. B) Both A & R are true. R is the incorrect explanation of A. C) A is true but R is false. D) A is false but R is true. E) Both A & R are false. Show Answer Correct Answer: A) Both A & R are true. R is the correct explanation of A. 9. The community of organisms that live in a particular area along with the non-living surroundings as well ..... A) Population. B) Community. C) Ecosystem. D) None of the above. Show Answer Correct Answer: C) Ecosystem. 10. What is causing damage to the Ozone layer? A) Methane. B) Carbon dioxide. C) CFCs. D) All of the above. Show Answer Correct Answer: C) CFCs. 11. Environmental day is on ..... A) April 22. B) June 5. C) December 7. D) September 28. Show Answer Correct Answer: B) June 5. 12. Which statement shows interaction of an abiotic component with a biotic component in an ecosystem? A) An earthworm making a burrow in the soil. B) A grasshopper feeding on a leaf. C) A mouse fighting with another mouse for food. D) Rainwater running down into the lake. Show Answer Correct Answer: A) An earthworm making a burrow in the soil. 13. Which of the following is non-biodegradable? A) Manures. B) Plastic. C) Plant's Products. D) Cow dung. Show Answer Correct Answer: B) Plastic. 14. When these energy sources are used, they are lost forever. A) Renewable. B) Green. C) Non-renewable. D) Sustainable. Show Answer Correct Answer: C) Non-renewable. 15. (c) Would this phenomenon have occurred if the chemical that had entered the food chain was biodegradable? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 16. The human made synthetic chemical used in refrigerators is A) CFC. B) PVC. C) LPG. D) CH$_{4}$. Show Answer Correct Answer: A) CFC. 17. 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. 18. 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. 19. In what category of waste do paint, household cleaners, medical waste, and solvents belong? A) Hazardous. B) Municipal solid. C) Industrial. D) Compost. Show Answer Correct Answer: A) Hazardous. 20. The region of the world of living thing is termed as A) Food chain. B) Food web. C) Ecosystem. D) Biosphere. Show Answer Correct Answer: D) Biosphere. 21. Green plants and Algae are the examples of A) Producers. B) Consumers. C) Decomposersers. D) None. Show Answer Correct Answer: A) Producers. 22. 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. 23. 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. 24. 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. 25. 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) Third Trophic level. C) Second Trophic level. D) Fourth Trophic level. Show Answer Correct Answer: D) Fourth Trophic level. 26. What the source of energy for all food chains? A) Soil. B) Earth's core. C) Tides. D) Sun. Show Answer Correct Answer: D) Sun. 27. To reduce pollution in the environment, people should ..... materials. A) Pollute. B) Clean. C) Throw away. D) Recycle. Show Answer Correct Answer: D) Recycle. 28. The rate at which producers in an ecosystem capture and store chemical energy as biomass is called: A) Net Primary Productivity. B) Gross Secondary Productivity. C) Gross Primary Productivity. D) Net Secondary Productivity. Show Answer Correct Answer: C) Gross Primary Productivity. 29. What form is "eating and to be eaten process" in one ecosystem? A) A chain. B) A pyramid. C) A cycle. D) A box. Show Answer Correct Answer: A) A chain. 30. A form of fossil fuel which we use during BBQs by the sea. A) Oil. B) Paper. C) Wood. D) Coal. Show Answer Correct Answer: D) Coal. 31. ..... protects us from the harmful ultra violet rays of the sun, A) Carbon-di-oxide. B) Nitrogen. C) Oxygen. D) Ozone. Show Answer Correct Answer: D) Ozone. 32. Which of the following is not an objective of the National Afforestation Programme? A) Restoration of degraded forests. B) Urbanisation in forest area. C) Improvement in the livelihood of people living near the forest. D) Development of forest resources. Show Answer Correct Answer: B) Urbanisation in forest area. 33. Which gas is not responsible for global warming? A) N2. B) CO2. C) NO2. D) Be. Show Answer Correct Answer: A) N2. 34. The accumulation of non-biodegradable substances in a food chain is known as A) Accumulation. B) Pollution. C) Eutrophication. D) Biomagnification. Show Answer Correct Answer: D) Biomagnification. 35. Ozone is a molecule formed by ..... oxygen atoms A) One. B) Two. C) Four. D) Three. Show Answer Correct Answer: D) Three. 36. Study of how living things interact with each other and with their nonliving environments A) Environmental Science. B) Ecology. C) Sustainability. D) Renewable Resource. Show Answer Correct Answer: B) Ecology. 37. There is ..... of energy as we go from one trophic level to the next A) No change. B) A gain. C) An increase. D) A loss. Show Answer Correct Answer: D) A loss. 38. Ozone is formed by A) Combining of three atoms of oxygen in presence of UV rays. B) Combining of three atoms of carbon. C) Combining of three atoms of nitrogen in presence of UV rays. D) Combining of three atoms of oxygen. Show Answer Correct Answer: A) Combining of three atoms of oxygen in presence of UV rays. 39. Why do we need to manage the garbage we producei)To improve the health and quality of life ii)For preventing environmental pollution iii) To produce more biodegradable plasticsiv) To reduce the strain on natural resources A) I and iv. B) Iii and ii. C) I, ii and iii. D) I, ii and iv. Show Answer Correct Answer: D) I, ii and iv. 40. Organisms which is present in the first tropic level A) Carnivores. B) Consumers. C) Producers. D) None of the above. Show Answer Correct Answer: C) Producers. 41. The ozone layer protects against radiation. Radiation can lead to which of the following: A) Decreasing Earth's temperature. B) Causing mutations in DNA. C) Limiting the amount of CO2 in the air. D) Reducing risk of cancer. Show Answer Correct Answer: B) Causing mutations in DNA. 42. Gases that stop heat from escaping into space are called ..... gases. A) Zero-emission. B) Greenhouse. C) Greenfield. D) Green. Show Answer Correct Answer: B) Greenhouse. 43. Everything around us, our surroundings. A) Environment. B) Ecosystem. C) Community. D) Habitat. Show Answer Correct Answer: A) Environment. 44. What do we need to survive and grow A) Air. B) Water. C) Sun light. D) All of these. Show Answer Correct Answer: D) All of these. 45. In the environment materials causing biomagnification A) Are stored in less amount in trophic levels. B) Remain as permanent residues. C) Decompose only in soil. D) Get recycled quickly. Show Answer Correct Answer: B) Remain as permanent residues. 46. In December 3, 1984 a vapour containing highly toxic cloud of methyl isocyanate (used in the production of insecticide carbaryl) burst from tall stacks of the union carbide pesticide plant and results in severe destruction. The incident took place in: A) London. B) Bhuj. C) Bhopal. D) Hiroshima. Show Answer Correct Answer: C) Bhopal. 47. What destroys an ecosystem the most? A) Birds. B) Insects. C) Animals. D) Humans. Show Answer Correct Answer: D) Humans. 48. Any substance or energy which is released in the environment and harms it causes ..... A) Pollution. B) Energy. C) Resource. D) Waste. Show Answer Correct Answer: A) Pollution. 49. What creates pollution? A) Water. B) Sunlight. C) Human activities. D) None of the above. Show Answer Correct Answer: C) Human activities. 50. Why is an invasive species likely to survive in a new environment? A) A lack of space. B) An abundance of predators. C) A lack of food. D) A lack of predators. Show Answer Correct Answer: D) A lack of predators. 51. Which of the following does NOT cause water pollution? A) Oil spills. B) Fertilizers from farms. C) Garbage. D) Smoke. Show Answer Correct Answer: D) Smoke. 52. Waste from our homes and factories are dumped into rivers, lakes, and seas, causing ..... A) Air pollution. B) Water pollution. C) Land pollution. D) Waste. Show Answer Correct Answer: B) Water pollution. 53. Maximum amount of non-biodegradable pollutant is A) T$_{2}$. B) T$_{4}$. C) T$_{3}$. D) T$_{1}$. Show Answer Correct Answer: B) T$_{4}$. 54. "Ensuring availability of water for future generations" is a A) Goal of water conservation. B) Strategy of water conservation. C) Key activity of water conservation. D) Ineffective water conservation instrument. Show Answer Correct Answer: A) Goal of water conservation. 55. The process in which waste is carefully sorted and disposed off in the right way is known as ..... A) Reduce, Reuse and Recycle. B) Waste Management. C) Waste Collection. D) Garbage Generation. Show Answer Correct Answer: B) Waste Management. 56. Which of the following helps us in the garbage management: A) Reduce, reuse, recycle. B) Landfilling. C) Vermicomposting. D) All of the above. Show Answer Correct Answer: D) All of the above. 57. Human-made materials like ..... will not be broken down by the action of bacteria or other saprophytes. A) Fats. B) Vitamins. C) Plastics. D) Carbohydrates. Show Answer Correct Answer: C) Plastics. 58. Which trophic level comprises of producers? A) First Trophic level. B) Forth Trophic level. C) Third Trophic level. D) Second Trophic level. Show Answer Correct Answer: A) First Trophic level. 59. How does air pollution effect people? A) It can cause people to have difficulty breathing. B) It can make sick people even sicker. C) Sometimes, air pollution can cause cancer. D) All of the above. Show Answer Correct Answer: D) All of the above. 60. The phenomenon by which toxins concentrate in the organisms at higher trophic levels within an ecosystem is known as ..... A) Biotoxicity. B) Eutrophication. C) Biomagnification. D) Predation. Show Answer Correct Answer: C) Biomagnification. ← PreviousNext →Related QuizzesScience QuizzesClass 10 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 5 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books