Students can practice the NCERT MCQ Questions for Class 10 Science Chapter 15 Our Environment with Answers Pdf free download is available here. Revise all the concepts easily by taking help from the MCQ Questions for Class 10 Science with Answers are prepared based on the latest exam pattern. Students can refer to these Our Environment Class 10 MCQs Questions with Answers and assess their preparation level.
Q1. Assertion: Vegetarian food habit is more beneficial to organisms.
Reason: Only 10% energy is available as food from one trophic level to next.
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.
(a) Both A and R are true and R is the correct explanation of A.
Q2. In natural ecosystems, decomposers include-
(a) only bacteria and fungi
(b) only microscopic animals
(c) herbivores and carnivores
(d) both (b) and (c)
(a) only bacteria and fungi
Q3. The percentage of solar radiation absorbed by all the green plants for the process of photosynthesis is about-
(a) 1%
(b) 8%
(c) 5%
(d) 10%
(a) 1%
Q4. The second trophic level is always of-
(a) herbivores
(b) autotrophs
(c) carnivores
(c) producers
(a) herbivores
Q5. The decomposers in an ecosystem-
(a) convert organic material to inorganic forms
(b) convert inorganic material to simpler forms
(c) convert inorganic material into organic compound
(d) do not break down organic compound
(a) convert organic material to inorganic forms
Q6. The depletion of the ozone layer causes
(a) global wanning
(b) earthquakes
(c) increased UV radiations
(d) acid rain
(c) increased UV radiations
Q7. In the given foodchain if the amount of energy at the fourth trophic level is 4 kJ, what will be the energy available at the producer level?
Grass ? Grasshopper ? Frog ? Snake
(a) 4 kJ
(b) 40 kJ
(c) 400 kJ
(d) 4000 kJ
(d) 4000 kJ
Q8. Which of the following is biodegradable?
(a) Aluminium can
(b) Polythene bag
(c) Cowdung
(d) DDT
(c) Cowdung
Q9. Which of the following is an abiotic component of an ecosystem?
(a) Humus
(b) Bacteria
(c) Plants
(d) Fungi
(a) Humus
Q10. Which one of the following pairs belong to the category of primary consumers?
(a) Eagle and snake
(b) Grasshoppers & cattle
(c) Snake and frog
(d) Water beetles & fish
(b) Grasshoppers & cattle
Q11. Which of the following chemicals causes depletion of the ozone layer?
(a) Carbon tetrachloride
(b) Methane
(c) Chloro fluoro carbon
(d) Carbon monoxide
(c) Chloro fluoro carbon
Q12. In a food chain, the third trophic level is always occupied by
(a) herbivore
(b) carnivore
(c) decomposer
(d) producer
(b) carnivore
Q13. The depletion of the ozone layer causes
(a) global wanning
(b) earthquakes
(c) increased UV radiations
(d) acid rain
(c) increased UV radiations
Q14. In the given foodchain if the amount of energy at the fourth trophic level is 4 kJ, what will be the energy available at the producer level?
Grass ? Grasshopper ? Frog ? Snake
(a) 4 kJ
(b) 40 kJ
(c) 400 kJ
(d) 4000 kJ
(d) 4000 kJ
Q15. Which of the statement is incorrect?
(a) All green plants and blue-green algae are producers
(b) Green plants get their food from organic compounds
(c) Producers prepare their own food from inorganic compounds
(d) Plants convert solar energy into chemical energy.
(b) Green plants get their food from organic compounds
Q16. Depletion of ozone layer is mainly due to:
(a) Chlorofluorocarbon compounds
(b) Pollution
(c) Methane
(d) Pesticides
(a) Chlorofluorocarbon compounds
Q17. Which of the two sets belong to the same trophic level?
(a) Rabbit: Tiger
(b) Vulture : Rat
(c) Grasshopper : Hawk
(d) Frog : Lizard
(d) Frog : Lizard
Q18. 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
(a) 6000 kJ
Q19. Which of the following is the best way for disposal of vegetable and fruit peels?
(a) Landfill
(b) Recycling
(c) Composting
(d) Burning
(c) Composting
Q20. The problem caused due to ozone hole is
(a) earthquakes
(b) damage due to UV radiations
(c) chemical pollution
(d) acid rain
(b) damage due to UV radiations
Chemistry MCQs Questions for Class 10 with Answers
- Chapter 1 : Chemical Reactions and Equations Class 10 MCQ
- Chapter 2 : Acids, Bases and Salts Class 10 MCQ
- Chapter 3 : Metals and Non-metals Class 10 MCQ
- Chapter 4 : Carbon and Its Compounds Class 10 MCQ
- Chapter 5 : Periodic Classification of Elements Class 10 MCQ
Biology MCQs Questions for Class 10 with Answers
- Chapter 6 : Life Processes Class 10 MCQ
- Chapter 7 : Control and Coordination Class 10 MCQ
- Chapter 8 : How do Organisms Reproduce? Class 10 MCQ
- Chapter 9 : Heredity and Evolution Class 10 MCQ
- Chapter 14 : Sources of Energy Class 10 MCQ
- Chapter 15 : Our Environment Class 10 MCQ
- Chapter 16 : Management of Natural Resources Class 10 MCQ
Physics MCQs Questions for Class 10 with Answers
- Chapter 10 : Light Reflection and Refraction Class 10 MCQ
- Chapter 11 : Human Eye and Colourful World Class 10 MCQ
- Chapter 12 : Electricity Class 10 MCQ
- Chapter 13 : Magnetic Effects of Electric Current Class 10 MCQ
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