This quiz works best with JavaScript enabled. Home > Cbse > Class 10 > Science > Our Environment > Class 10 Science Chapter 15 Our Environment – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 10 Science Chapter 15 Our Environment Quiz 5 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Calculate the amount of energy available to snake in the given food chain if there is 6500 J of energy available to grass hopper.Grass ..... > grass hopper ..... > frog ..... > snake A) 6.5 J. B) 6500 J. C) 65 J. D) 650 J. Show Answer Correct Answer: C) 65 J. 2. Which of the following are environment friendly practices? A) Carrying cloth bags to put purchases in while shopping. B) Switching off unnecessary lights and fans. C) Walking to school instead of getting your mother to drop you on her scooter. D) All. Show Answer Correct Answer: D) All. 3. Food chain is always atraight A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 4. Which of the following has contributed in much of our waste becoming non-biodegradable? A) Changes in packaging and increase in the use of plastic. B) Adapting eco-friendly alternatives for the usage of plastic. C) Increasing number of paper cups and plates. D) Disposing waste in the correct manner by segregating it. Show Answer Correct Answer: A) Changes in packaging and increase in the use of plastic. 5. When is World Environment Day is celebrated? A) 5 August. B) 5 February. C) 5 June. D) 5 may. Show Answer Correct Answer: C) 5 June. 6. Which member of the following food chain is most affected by DDT, a pollutant?Algae ..... > small fish ..... > medium fish $\rightarrow$ hawks A) Algae. B) Small fish. C) Medium fish. D) Hawks. Show Answer Correct Answer: D) Hawks. 7. What is an abiotic component of environment? A) Table. B) Water. C) Human. D) None of these. Show Answer Correct Answer: B) Water. 8. ..... is using materials wisely to protect them. A) Recycling. B) Pollution. C) Smog. D) Conservation. Show Answer Correct Answer: D) Conservation. 9. We should reduce the use of the plastic bags because: A) They react with atmospheric gases. B) They r non-biodegradable. C) They are made of toxic materials. D) They r not durable. Show Answer Correct Answer: B) They r non-biodegradable. 10. Very small fragments of plastic that harm the environment. A) Biodegradable Plastics. B) NOLICISTICISISS. C) Plastic Waste. D) Microplastics. Show Answer Correct Answer: D) Microplastics. 11. Every food chain in the ecosystem begins with ..... , which are the original source of food A) Producers. B) Parasites. C) Saprophytes. D) Herbivores. Show Answer Correct Answer: A) Producers. 12. Carbon is used by plants during which process? A) Transpiration. B) Respiration. C) Photosynthesis. D) Transportation. Show Answer Correct Answer: C) Photosynthesis. 13. Which gas is mainly responsible for the green house effect? A) Water Vapours. B) H2. C) O2. D) CO2. Show Answer Correct Answer: D) CO2. 14. Which of the following salts is the main cause of permanent hardness of water? A) Magnesium sulphate. B) Magnesium bicarbonate. C) Magnesium carbonate. D) None of the above. Show Answer Correct Answer: A) Magnesium sulphate. 15. Consider the following food chain:Algae > Mayfly > Minnow > TroutIn a polluted ecosystem, which organism is likely to have the HIGHEST level of toxic chemicals in its body? A) Minnow. B) Mayfly. C) Algae. D) Trout. Show Answer Correct Answer: D) Trout. 16. Which micro organism is likely to be present in high concentration with a water body is polluted with sewage A) E.coli. B) L.bacillus. C) Both. D) None. Show Answer Correct Answer: A) E.coli. 17. The 3rs include reduce, reuse and ..... A) Dustbin. B) Recycle. C) Waste. D) None of the above. Show Answer Correct Answer: B) Recycle. 18. Cutting of trees in a forest is callled A) Reforestation. B) Deforestation. C) Tree fall. D) None of them. Show Answer Correct Answer: B) Deforestation. 19. The ecosystem of earth is known as A) Biosphere. B) Community. C) Association. D) Biome. Show Answer Correct Answer: A) Biosphere. 20. Organisms which synthesis carbohydrates from inorganic compounds using radiant energy are called A) Decomposersers. B) Producers. C) Herbivores. D) Carnivores. Show Answer Correct Answer: B) Producers. ← PreviousRelated 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 4 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books