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Class 10 · Tamil Nadu State Board

Tamil Nadu Class 10 Science Model Paper 1

Samacheer Kalvi Class 10 Science model paper with balanced Physics, Chemistry, Biology, Visual Communication sections, time plan, answer strategy, and self-check rubric.

Updated 9 May 20263 min read

Student Instructions

Write this paper in one sitting. Keep a separate sheet for rough numerical work. After completing the paper, mark weak chapters and revise those chapter guides again.

Time Plan

PartSuggested time
Read the paper10 minutes
One-mark questions20 minutes
Two-mark questions35 minutes
Five-mark questions55 minutes
Diagrams and checking20 minutes

Part A - One-Mark Questions

Answer all questions briefly.

1. Define inertia. 2. State Ohm's law. 3. What is atomicity? 4. Define solubility. 5. What is oxidation? 6. Name the tissue that transports food in plants. 7. What is a neuron? 8. Name the hormone that controls blood glucose level. 9. Define heredity. 10. What is biodiversity?

Part B - Two-Mark Questions

Answer any eight.

1. Differentiate between mass and weight. 2. Why are household appliances connected in parallel? 3. Write two differences between longitudinal and transverse waves. 4. Differentiate between atom and molecule. 5. How does atomic size vary across a period? 6. What happens during dilution? 7. Differentiate between xylem and phloem. 8. What is reflex action? 9. Write two functions of auxin. 10. Differentiate between communicable and non-communicable diseases.

Part C - Five-Mark Questions

Answer any five.

1. Explain Newton's laws of motion with examples. 2. Explain Ohm's law with formula and graph. 3. Describe the mole concept and solve a simple mass-to-moles problem. 4. Explain the types of chemical reactions with examples. 5. Describe the structure of a neuron with a labelled diagram. 6. Explain human circulation with the role of heart and blood vessels. 7. Explain Mendel's monohybrid cross.

Diagram Section

Practise neat diagrams before the exam. Draw any two:

1. Neuron 2. Human heart 3. Dicot stem 4. Simple electric circuit

Answer Presentation Rules

  • Write definitions in the first line.
  • Use tables for difference-between questions.
  • Mention formula, substitution, and unit in numerical answers.
  • Draw diagrams on the right side when possible.
  • Label diagrams clearly with straight lines.
  • Underline final terms only if it stays neat.

Self-Check Rubric

SkillCheck
CoverageDid you answer all compulsory questions?
AccuracyDid you avoid wrong units and equations?
PresentationAre diagrams labelled clearly?
TimeDid you finish with checking time?
RevisionDid you list three weak chapters after correction?

After-Paper Revision

1. Mark every unanswered question. 2. Rewrite all wrong definitions. 3. Practise missed diagrams twice. 4. Revise formulas for Electricity and Motion. 5. Attempt another paper after two days.

Frequently Asked Questions

Use the same time discipline as the public exam. Keep the final 10 to 15 minutes for checking diagrams, units, and question numbers.
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