Q.01. How did Gavaskar’s uncle inspire him?
His uncle told him that if he wanted to play cricket for India, he must earn his place through hard work and discipline, not by influence or relations.
Q.02. What lesson do we learn from Gavaskar’s childhood incident at birth?
The incident teaches us that small observations and alertness can save lives. His uncle’s carefulness saved him from being exchanged with another baby.
Q.03. Why does Rahul criticize modern education?
Rahul feels modern education is only about memorizing facts and passing exams. It ignores practical skills, wisdom, and the true values of life.
Q.05. What is Rahul’s idea of a true teacher?
Rahul believes a true teacher is life itself. Experiences, struggles, and real situations teach us more than any textbooks or classroom lessons.
Q15. How does the mother in “Father, Dear Father” reflect modern pressures?
Though highly educated, Rahul’s mother lives a stressful life full of anxieties and ambitions, showing how modern life often brings more tension than peace.
Q.06. Why is renewable energy called the “fuel of the future”?
Renewable energy is clean, endless, and eco-friendly. Unlike fossil fuels, it does not pollute and ensures a sustainable supply for future generations.
Q.07. How does solar energy help in rural development?
Solar panels provide electricity in remote villages, run water pumps, and support education and healthcare, improving the quality of life in rural areas.
Q.08. What is biogas and how is it useful?
Biogas is produced from animal waste and organic matter. It is used for cooking and lighting in villages, reducing dependence on firewood and LPG.
Q.09. What environmental benefits do renewables provide?
Renewable energy reduces carbon emissions, decreases air pollution, protects forests from cutting, and helps fight global warming by replacing fossil fuels.
q.10. How are the three chapters relevant to students today?
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They teach us to value family, seek practical education, and adopt sustainable energy. Together, they guide students towards balanced, responsible, and meaningful living.
10 Important Question Answers
Q 11. What is photosynthesis?
Photosynthesis is the process by which green plants use sunlight, water and carbon dioxide to make food. It releases oxygen, essential for life on Earth.
Q.12. Explain the difference between renewable and non-renewable energy.
Renewable energy like solar, wind and water is unlimited and eco-friendly. Non-renewable energy like coal, oil and gas is limited and pollutes environment.
Q.13. What are acids and bases?
Acids are sour substances releasing H⁺ ions, e.g., lemon juice. Bases are bitter and slippery, releasing OH⁻ ions, e.g., soap water.
Q.14. Define ecosystem.
Ecosystem is a community where living organisms interact with each other and with non-living elements like soil, water, and climate for survival.
Q.15. What is an electric circuit?
An electric circuit is a closed path allowing current to flow through wires, battery and devices like bulbs or fans. Open circuits stop current.
Q.16. What is force? Give an example.
Force is a push or pull acting on an object that can change its state of motion. Example: Pushing a cart makes it move faster.
Q.17. Explain the water cycle.
Water cycle includes evaporation, condensation and precipitation. Water evaporates, forms clouds and falls as rain, maintaining balance in nature.
Q.18. What is the importance of digestion?
Digestion breaks down food into nutrients like carbohydrates, proteins and fats which are absorbed by body to produce energy and maintain health.
Q.19. Differentiate between conductors and insulators.
Conductors like copper allow electricity to flow easily. Insulators like rubber and plastic block electricity and protect from electric shock.
Q20. What are Newton’s three laws of motion?
Newton’s laws explain motion: (1) Inertia, (2) Force = mass × acceleration, (3) Every action has equal opposite reaction. These govern all movements.