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Class 10 Science – 25 Most Important MCQs

 

Class 10 Science Most Important MCQs | Top 25 Questions | StudyBeacon

Class 10 Science – 25 Most Important MCQs (All Chapters)

These 25 MCQs are the highest-yield questions repeatedly asked or implied in CBSE exams. Focus on concepts, not memorization.

Biology (Q1–Q9)

Q1. Energy currency of cell is: [Easy]




Q2. Which tissue transports food in plants? [Easy]




Q3. Site of fertilization in humans: [Easy]




Q4. Which gas is released in photosynthesis? [Easy]




Q5. Longest part of human brain: [Moderate]




Q6. Which blood vessels have valves? [Moderate]




Q7. Insulin deficiency causes: [Easy]




Q8. DNA replication occurs during: [Moderate]




Q9. Which is an acquired trait? [Moderate]




Chemistry (Q10–Q17)

Q10. Most reactive metal: [Easy]




Q11. Chemical formula of washing soda: [Moderate]




Q12. Which has highest pH? [Easy]




Q13. Rusting requires: [Easy]




Q14. Ethanoic acid turns blue litmus: [Easy]




Q15. Carbon forms many compounds due to: [Moderate]




Q16. Soap cleansing action due to: [Moderate]




Q17. Which oxide is amphoteric? [Moderate]




Physics (Q18–Q25)

Q18. SI unit of resistance: [Easy]




Q19. Mirror used by dentists: [Easy]




Q20. Power of lens is reciprocal of: [Easy]




Q21. Electric power formula: [Moderate]

\( P = VI \)


Q22. Image at focus of concave mirror: [Moderate]




Q23. Commercial unit of electricity: [Easy]




Q24. Speed of light is maximum in: [Easy]




Q25. Magnetic field strongest at: [Moderate]




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