Board Exam Practice — Energy and Environment

Grade 10 Science — Board Exam Practice — Energy and Environment: 25 practice questions with instant scoring and explanations.

1. Which is a non-renewable energy source?
2. The primary source of energy for photosynthesis is:
3. The percentage of energy transferred from one trophic level to the next is:
4. Which organism is a primary consumer?
5. The greenhouse gas primarily responsible for global warming is:
6. Acid rain is primarily caused by:
7. The destruction of the ozone layer is mainly caused by:
8. In a food chain, the maximum amount of energy is available to:
9. Biomagnification refers to:
10. Which is an example of renewable energy?
11. The most abundant greenhouse gas by volume is:
12. Eutrophication is caused by:
13. Which is a biodegradable pollutant?
14. The carbon cycle involves:
15. In an ecosystem, decomposers play the role of:
16. The carrying capacity of an environment refers to:
17. Which practice is most sustainable?
18. The nitrogen cycle involves conversion of N₂ to:
19. Which organism fixes atmospheric nitrogen?
20. The most effective way to reduce plastic pollution is:
21. Which region has the highest biodiversity?
22. The loss of habitat is the primary threat to:
23. Conservation of energy means:
24. Wetlands are important because they:
25. The main source of water pollution in developing countries is: