This quiz works best with JavaScript enabled. Home > Class 10 > 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 (25 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) Decomposers-carnivores-autotrophs-herbivores. B) Herbivores-autotrophs-carnivores-decomposers. C) Autotrophs-herbivores-carnivores-decomposers. D) Carnivores-producers-omnivores. Show Answer Correct Answer: C) 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) 6000 kJ. B) 20 kJ. C) 60 kJ. D) 600 kJ. Show Answer Correct Answer: A) 6000 kJ. 8. Identify the non-biodegradable substance from the following. A) Paper. B) Tin cans. C) Vegetable peels. D) Wood. Show Answer Correct Answer: B) 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) Climate change. B) Global Hotflash. C) Solar Wind. D) Climate Heating. Show Answer Correct Answer: A) 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) Food web. D) Producer. 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) Oxygen generation. D) Waste material generation. Show Answer Correct Answer: D) Waste material generation. 17. Main factor for the depletion of ozone layer os A) CFCs. B) Oxygen. C) Sulphur. D) Nitrogen. Show Answer Correct Answer: A) 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) Renewable. B) Non-renewable. C) Fossil Fuel. D) Nuclear. Show Answer Correct Answer: A) 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) Paper. B) Cotton Cloths. C) Cotton. D) DDT. Show Answer Correct Answer: D) DDT. 24. The Decomposers in an ecosystem A) Converts organic material to inorganic forms. B) Converts inorganic material into simpler forms. C) Converts inorganic material into organic compound. D) Do not break down organic compound. Show Answer Correct Answer: A) Converts organic material to inorganic forms. 25. Which of the following is not a part of biotic components of ecosystem A) Bacteria. B) Algae. C) Fish. D) Water. Show Answer Correct Answer: D) Water. 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