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 element is the most abundant in the Earth’s crust?

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Which organelle is known as the "powerhouse of the cell"?

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What is the chemical formula of water?

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Which organ stores and releases glucose in the human body?

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What is the function of hemoglobin in the blood?

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What is the boiling point of water at standard atmospheric pressure?

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What is the SI unit of power?

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What type of bond is formed by sharing electrons between atoms?

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Which planet is known as the "Red Planet"?

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What is the unit of electrical resistance?

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