Topic Details (Notes format)

Our Environment

Subject: General Science

Book: NCERT Science Class 10

The environment consists of biotic and abiotic components.
- **Ecosystem**:
- Producers, Consumers, Decomposers.
- **Food Chains and Food Webs**:
- Energy transfer from one trophic level to another.
- **Environmental Issues**:
- Ozone Layer Depletion.
- Global Warming.
- Waste Management.

**Possible Exam Questions:**
1. What are the components of an ecosystem?
2. Explain the importance of food chains and food webs.
3. How does human activity contribute to global warming?
4. What is the significance of waste management?
5. Discuss the impact of ozone depletion on life.

Practice Questions

Which disease is caused by a virus?

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Which gas is used in the process of welding?

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What is the pH of pure water at 25°C?

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Which type of blood vessel carries blood away from the heart?

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Which is the largest planet in the Solar System?

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What is the primary component of the Sun?

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Which organ is responsible for filtering blood in the human body?

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What is the unit of frequency?

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Which type of radiation has the shortest wavelength?

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Which gas is released during photosynthesis?

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