This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Our Environment > Class 10 Science Chapter 15 Our Environment – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 15 Our Environment Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Find out the odd one A) Rainfall Temperature. B) Temperature. C) Bacteria. D) Wind. Show Answer Correct Answer: C) Bacteria. 2. Leachate is a ..... A) A liquid that has passed through com-seeps solid waste in a landfill. B) A gas that has passed through com-seeps solid waste in a landfill. C) A solid that has passed through com-seeps solid waste in a landfill. D) A chemical that has passed through com-seeps solid waste in a landfill. Show Answer Correct Answer: A) A liquid that has passed through com-seeps solid waste in a landfill. 3. Which of the following illustrates the correct ordering of trophic levels? A) Herbivores-autotrophs-carnivores-decomposers. B) Decomposers-carnivores-autotrophs-herbivores. C) Carnivores-producers-omnivores. D) Autotrophs-herbivores-carnivores-decomposers. Show Answer Correct Answer: D) Autotrophs-herbivores-carnivores-decomposers. 4. Every food chain in the ecosystem begins with ..... which is the original source of food. A) Consumer. B) Producer. C) Dekposer. D) None of the above. Show Answer Correct Answer: B) Producer. 5. Which of the following constitute a food chain? A) Grass, tiger and ant. B) Tiger, goat and human. C) Goat, human and grass. D) Human, fish and crab. Show Answer Correct Answer: C) Goat, human and grass. 6. How does oil discharge in the marine environment impact the fishes and other organisms? A) Kills the Fishes. B) Cause diseases to the marine life. C) Pollute the water. D) All of them. Show Answer Correct Answer: D) All of them. 7. In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level? A) 60 kJ. B) 6000 kJ. C) 20 kJ. D) 600 kJ. Show Answer Correct Answer: B) 6000 kJ. 8. Identify the non-biodegradable substance from the following. A) Paper. B) Wood. C) Vegetable peels. D) Tin cans. Show Answer Correct Answer: D) Tin cans. 9. Energy increases as you move up the food pyramid (from bottom to top). A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 10. Zoo, aquarium, garden are all types of ..... ecosystem A) Natural. B) Manmade. C) All the above. D) None of the above. Show Answer Correct Answer: B) Manmade. 11. Is Earth day the only day you have to protect the earth? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 12. Effects of soil contamination are A) Replenishing of soil nutrients. B) Underground water depletion. C) Effect on human health. D) Both b and c. Show Answer Correct Answer: D) Both b and c. 13. Another name for global warming is ..... A) Global Hotflash. B) Climate Heating. C) Climate change. D) Solar Wind. Show Answer Correct Answer: C) Climate change. 14. ASSERTION:Ozone is both beneficial and damaging.REASON:Stop the release of chlorofluorocarbons to protect the ozone. 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: B) Both A & R are true. R is the incorrect explanation of A. 15. Each step in a food chain is called a A) Trophic level. B) Consumer level. C) Producer. D) Food web. Show Answer Correct Answer: A) Trophic level. 16. Improvements in our life-style have resulted in greater amounts of: A) Energy generation. B) Carbon dioxide generation. C) Waste material generation. D) Oxygen generation. Show Answer Correct Answer: C) Waste material generation. 17. Main factor for the depletion of ozone layer os A) Nitrogen. B) CFCs. C) Oxygen. D) Sulphur. Show Answer Correct Answer: B) CFCs. 18. Food chain consists of A) The sun. B) Producers. C) Consumers. D) All of these. Show Answer Correct Answer: D) All of these. 19. This type of energy source can be used over and over again. A) Fossil Fuel. B) Nuclear. C) Renewable. D) Non-renewable. Show Answer Correct Answer: C) Renewable. 20. ..... is waste obtained from plants and animals. A) Biodegradable waste. B) Non-biodegradable waste. C) All the above. D) None of the above. Show Answer Correct Answer: A) Biodegradable waste. 21. The major part of our rubbish is taken to ..... A) Landfills. B) Fuel lands. C) Wastelands. D) Rubbish fields. Show Answer Correct Answer: A) Landfills. 22. When we create something new out of old materials we ..... A) Cycle. B) Recycle. C) All the above. D) None of the above. Show Answer Correct Answer: B) Recycle. 23. ..... is not a biodegradable pollutant. A) Cotton. B) Cotton Cloths. C) Paper. D) DDT. Show Answer Correct Answer: D) DDT. 24. The Decomposers in an ecosystem A) Converts inorganic material into simpler forms. B) Converts organic material to inorganic forms. C) Converts inorganic material into organic compound. D) Do not break down organic compound. Show Answer Correct Answer: B) Converts organic material to inorganic forms. 25. Which of the following is not a part of biotic components of ecosystem A) Algae. B) Water. C) Fish. D) Bacteria. Show Answer Correct Answer: B) Water. 26. Why is there a limited amount of energy that can be passed on to the next feeding level? A) There is never enough sunlight available. B) Some ecosystems have limited resources. C) Organisms use some of the energy they get from eating. D) All the energy is available to be passed on. Show Answer Correct Answer: C) Organisms use some of the energy they get from eating. 27. Which substance is responsible for the depletion of the ozone layer: A) CFC's. B) DDT. C) Ammonia. D) CH$_{4}$. Show Answer Correct Answer: A) CFC's. 28. Main causes of soil pollution are: A) Deforestation. B) Industrial pollution. C) Excessive use of fertilizers and pesticides. D) All of the above. Show Answer Correct Answer: D) All of the above. 29. Which of the following is an not example of abiotic factors? A) Heat. B) Temperature. C) Lights. D) Plants. Show Answer Correct Answer: D) Plants. 30. Which of the following is biodegradable waste? A) Aluminum can. B) Plastic can. C) Cow dung. D) Polythene. Show Answer Correct Answer: C) Cow dung. 31. Land, water, air, etc, comprise the ..... environment. A) Human. B) Man-made. C) Natural. D) Artificial. Show Answer Correct Answer: C) Natural. 32. The problem caused due to ozone hole is A) Acid rain. B) Earthquakes. C) Damage due to UV radiations. D) Chemical pollution. Show Answer Correct Answer: C) Damage due to UV radiations. 33. The direction of the flow of energy in a food web is represented by ..... A) Light bulbs. B) Arrows. C) Dotted Lines. D) Bubbles. Show Answer Correct Answer: B) Arrows. 34. ..... are found as an alternative for plastics which are decomposed by microbial action. A) PVC. B) Biodegradable plastics. C) Thermoplastic plastic. D) Thermosetting plastic. Show Answer Correct Answer: B) Biodegradable plastics. 35. Maximum amount of energy lies in A) T$_{2}$. B) T$_{1}$. C) T$_{3}$. D) T$_{4}$. Show Answer Correct Answer: B) T$_{1}$. 36. The constituents which do not form eco-system are ..... A) Biotic constituents. B) Abiotic constituents. C) Plastic bag. D) All of these. Show Answer Correct Answer: C) Plastic bag. 37. In ecosystem the flow of energy is A) Unidirectional. B) Bidirectional. C) Multi directional. D) All o these. Show Answer Correct Answer: A) Unidirectional. 38. What is a example of a abiotic factor? A) Panda. B) Turtle. C) Butterfly. D) Weather. Show Answer Correct Answer: D) Weather. 39. Any object that can be used to give us energy is called a ..... of energy. A) Kind. B) Source. C) Type. D) Form. Show Answer Correct Answer: B) Source. 40. A decrease in the grass population will most immediately affect decrease the available energy for the A) Frog. B) Snake. C) Mouse. D) Hawk. Show Answer Correct Answer: C) Mouse. 41. What is population? A) A group of mixed species of organisms. B) A group of different species in one habitat. C) A group with majority of one species and minority of another species. D) A group of same species in one habitat. Show Answer Correct Answer: B) A group of different species in one habitat. 42. What damage can UV rays cause? A) Can cause sunburn. B) Can cause some types of skin cancer. C) Cataracts. D) All of the above. Show Answer Correct Answer: D) All of the above. 43. This forms when rainwater passes through pollution in the air. A) Ozone. B) Smog. C) Fog. D) Acid Rain. Show Answer Correct Answer: D) Acid Rain. 44. When is the World Environment Day celebrated? A) 11 August. B) 16 June. C) 5 June. D) 11 December. Show Answer Correct Answer: C) 5 June. 45. In the given food chain if the amount of energy at the fourth trophic level is 4 kJ, what will be the energy available at the producer level?Grass $\rightarrow$ Grasshopper $\rightarrow$ Frog $\rightarrow$ Snake A) 4000kj. B) 40kJ. C) 4kJ. D) 400kJ. Show Answer Correct Answer: A) 4000kj. 46. The ..... is the functional unit of environment. A) Genus. B) Biome. C) Class. D) None of the above. Show Answer Correct Answer: D) None of the above. 47. Trophic levels are formed by A) Only animals. B) Only carnivores. C) Only plants. D) Organisms linked in food chain. Show Answer Correct Answer: D) Organisms linked in food chain. 48. The ..... falling from the sky can be dangerous. A) Acid train. B) Acid grain. C) Acid rain. D) Acid pain. Show Answer Correct Answer: C) Acid rain. 49. Non biodegradable waste materials can be treated by composting technique. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 50. The Earth's temperature rises due to ..... A) Natural disasters. B) Melting ice caps. C) Greenhouse effect. D) Mudslides. Show Answer Correct Answer: C) Greenhouse effect. 51. World Environment Dya is celebrated on A) 11th July. B) 26th December. C) 16th October. D) 5th June. Show Answer Correct Answer: D) 5th June. 52. All energy on Earth ultimately comes from what source? A) Water. B) Sun. C) Oxygen. D) Consumers. Show Answer Correct Answer: B) Sun. 53. How much amount of energy will not be transferred to a herbivore if the amount of energy of producer is x units: A) 90%. B) 50%. C) 70%. D) None of the above. Show Answer Correct Answer: A) 90%. 54. What is the organic material of biological origin called? A) Bioenergy. B) Biofuel. C) Biomass. D) Biogeochemical cycle. Show Answer Correct Answer: C) Biomass. 55. What will happen if deer is missing from the food chain:Grass $\rightarrow$ Deer $\rightarrow$ Tiger? A) The population of tiger will increase. B) The population of tiger will increase. C) The population of grass decrease. D) Population of tiger decrease and grass increases. Show Answer Correct Answer: D) Population of tiger decrease and grass increases. 56. The manufacturing of Chlorofluorocarbons free refrigerators is mandatory throughout the world. How this help prevent ozone depletion? A) This will reduce the release of CFCs that reacts with ozone molecules. B) This will help convert the CFCs into ozone molecules. C) This will reduce the production of CFC from oxygen molecules. D) This will help convert oxygen molecules into ozone. Show Answer Correct Answer: A) This will reduce the release of CFCs that reacts with ozone molecules. 57. The process of accumulation of harmful chemical substances like pesticides, in the body of living organisms at each trophic level of a food chain is known as: A) Biological accumulation. B) Biological magnification. C) Biological environment. D) Chemical magnification. Show Answer Correct Answer: B) Biological magnification. 58. Rag pickers remove: A) Plastic, polythene, paper and metal wastes. B) Rags, cardboards, glass articles. C) Both 1 and 2. D) Food articles. Show Answer Correct Answer: C) Both 1 and 2. 59. ..... is a terrestrial ecosystem. A) Pond. B) Lake. C) Aquarium. D) A natural forest. Show Answer Correct Answer: D) A natural forest. 60. Natural environment is important because ..... A) It is essential to sustain life. B) It helps in providing scenic beauty. C) It provides food for many living beings. D) None of the above. Show Answer Correct Answer: A) It is essential to sustain life. Next →Related QuizzesScience QuizzesClass 10 QuizzesClass 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 5 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books