Here are some important questions for Class 10 Science (CBSE) that cover key topics from the syllabus.
These questions are based on previous years’ exam patterns and frequently asked topics:
● Physics
1. Electricity
– Derive the expression for the equivalent resistance of three resistors connected in series and parallel.
– State Ohm’s law. Draw a circuit diagram to verify Ohm’s law.
– Explain the heating effect of electric current and derive the expression for heat produced.
2. Magnetic Effects of Electric Current
– Explain the working of an electric motor with a labeled diagram.
– What is electromagnetic induction? State Faraday’s law of electromagnetic induction.
– Describe the construction and working of an AC generator.
3. Light – Reflection and Refraction
– Derive the mirror formula and lens formula.
– Explain the refraction of light through a glass slab and a triangular prism.
– What is the power of a lens? Define its SI unit.
● Chemistry
4. Chemical Reactions and Equations
– Balance the following chemical equation and identify the type of reaction:
3Fe + 4H2O —–Fe3O4 + 2H2
– Explain the process of corrosion and rancidity with examples.
5. Acids, Bases, and Salts
– What is a neutralization reaction? Give an example.
– Explain the pH scale and its importance in everyday life.
– How is washing soda (Na₂CO₃·10H₂O) prepared from sodium chloride?
6. Metals and Non-Metals
– Explain the reactivity series of metals and its applications.
– Describe the extraction of metals from their ores (e.g., extraction of iron).
– Why do metals conduct electricity, whereas non-metals do not?
● Biology
7. Life Processes
– Explain the process of photosynthesis and write its chemical equation.
– Describe the human digestive system with a labeled diagram.
– What is the role of the diaphragm and ribs in respiration?
8. Control and Coordination
– Explain the structure and function of the human brain.
– What are hormones? Describe the role of insulin in the human body.
– Compare the nervous system and endocrine system.
9. Heredity and Evolution
– Explain Mendel’s laws of inheritance with an example.
– What is speciation? Explain the factors responsible for speciation.
– Describe the evidence for evolution.
10. Our Environment
– Explain the flow of energy in an ecosystem.
– What is the ozone layer? How is it getting depleted?
– Describe the role of decomposers in the environment.
Tips for Preparation:
– Focus on NCERT textbooks as they are the primary source for CBSE exams.
– Practice numerical problems in Physics and Chemistry.
– Revise diagrams and their labeling for Biology.
– Solve previous years’ question papers and sample papers.
Good luck with your preparation!
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