“Fearless Learning: Crack Class 10 Science with Powerful Insights”

1. Chemical Reactions and Equations

• Key Concepts:
  • Types of chemical reactions: Combination, Decomposition, Displacement, Double Displacement, Redox.
  • Writing and balancing chemical equations.
  • Applications of chemical reactions in real life.
• FAQs:
  1. Define oxidation and reduction with examples.
  2. Write a balanced chemical equation for the reaction between quicklime and water.
  3. Differentiate between displacement and double displacement reactions.
  4. What is the importance of balancing a chemical equation?

2. Acids, Bases, and Salts

• Key Concepts:
  • Properties of acids and bases.
  • pH scale and its applications.
  • Preparation and uses of common salts (e.g., baking soda, washing soda, bleaching powder).
• FAQs:
  1. Why is the pH of the human stomach acidic? How is it neutralized?
  2. Write the chemical equation for the preparation of washing soda from baking soda.
  3. Explain the role of pH in soil and its impact on agriculture.
  4. Why is a solution of NaOH used to remove grease?

3. Metals and Non-metals

• Key Concepts:
  • Properties of metals and non-metals.
  • Reactivity series.
  • Corrosion and its prevention.
  • Alloys and their uses.
• FAQs:
  1. Explain the process of electroplating.
  2. Why do copper articles develop a green coating over time?
  3. Write the reactions of metals with water, acid, and oxygen.
  4. How can rusting of iron be prevented?

4. Carbon and Its Compounds

• Key Concepts:
  • Covalent bonding in carbon compounds.
  • Homologous series.
  • Functional groups: Alcohol, Aldehyde, Ketone, Carboxylic Acid.
  • Important chemical reactions (e.g., esterification, saponification).
• FAQs:
  1. Explain why carbon forms covalent bonds.
  2. Write the chemical equation for the reaction between ethanol and acetic acid.
  3. What is a homologous series? Give examples.
  4. Explain the process of saponification.

5. Life Processes

• Key Concepts:
  • Nutrition, respiration, transportation, and excretion in plants and animals.
  • Human digestive and circulatory systems.
• FAQs:
  1. Differentiate between aerobic and anaerobic respiration.
  2. How is food transported in plants?
  3. Explain the process of double circulation in humans.
  4. Describe the role of nephrons in excretion.

6. Control and Coordination

• Key Concepts:
  • Nervous system and endocrine system in humans.
  • Plant hormones.
  • Reflex actions.
• FAQs:
  1. Explain the mechanism of reflex action with an example.
  2. List the functions of auxins in plants.
  3. How does the human brain coordinate different activities?
  4. Compare nervous and hormonal control.

6. Control and Coordination

• Key Concepts:
  • Nervous system and endocrine system in humans.
  • Plant hormones.
  • Reflex actions.
• FAQs:
  1. Explain the mechanism of reflex action with an example.
  2. List the functions of auxins in plants.
  3. How does the human brain coordinate different activities?
  4. Compare nervous and hormonal control.

8. Light – Reflection and Refraction

• Key Concepts:
  • Laws of reflection and refraction.
  • Mirror formula and lens formula.
  • Human eye and defects of vision.
• FAQs:
  1. Derive the mirror formula.
  2. What is the principle of a convex lens in correcting myopia?
  3. Explain the phenomenon of refraction through a glass slab.
  4. Why does a ray bend when passing through a prism?

9. Electricity

• Key Concepts:
  • Ohm’s law.
  • Series and parallel circuits.
  • Heating effects of electric current.
  • Domestic circuits.
• FAQs:
  1. State and explain Ohm’s law with a graph.
  2. Compare the advantages of series and parallel connections in circuits.
  3. Derive the formula for power in an electric circuit.
  4. Why are fuses used in household wiring?

10. Magnetic Effects of Electric Current

• Key Concepts:
  • Magnetic field and field lines.
  • Electromagnetic induction.
  • Working of electric motor and generator.
• FAQs:
  1. Sketch magnetic field lines around a current-carrying solenoid.
  2. What is electromagnetic induction? Explain with an example.
  3. How does an electric motor work?
  4. Why does a freely suspended magnet align itself in the north-south direction?

11. Sources of Energy

• Key Concepts:
  • Renewable and non-renewable energy.
  • Solar energy, wind energy, and hydroelectricity.
  • Environmental consequences of energy use.
• FAQs:
  1. Differentiate between renewable and non-renewable sources of energy.
  2. Explain the working of a biogas plant.
  3. What are the environmental consequences of using fossil fuels?
  4. How is solar energy harnessed?

Exam Tips

• Understand key diagrams (e.g., human eye, digestive system, electric motor).
• Practice numerical problems, especially in Physics (Electricity and Light).
• Memorize chemical reactions and key formulas.
• Pay attention to application-based questions.

Would you like detailed explanations or diagrams for any specific topic?

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