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Class 10 · Tamil Nadu State Board

Tamil Nadu Class 10 Science Question Bank

Samacheer Kalvi Class 10 Science question bank with one-mark, two-mark, five-mark, diagram, equation, numerical, and revision questions across Physics, Chemistry, Biology, and Visual Communication.

Updated 9 May 20263 min read

How to Use This Question Bank

Use this page after finishing the chapter guides. Do not only read the answers in your mind. Write answers for long questions and diagrams because public exam marks depend on presentation.

One-Mark Question Bank

Physics

  • Define inertia.
  • State Ohm's law.
  • Write the SI unit of resistance.
  • What is focal length?
  • Define radioactivity.
  • What is echo?

Chemistry

  • What is Avogadro number?
  • Define atomicity.
  • State the modern periodic law.
  • What is a saturated solution?
  • Define oxidation.
  • What is catenation?

Biology

  • What is photosynthesis?
  • Define tissue.
  • What is a neuron?
  • Name the hormone secreted by pancreas.
  • Define heredity.
  • What is vaccination?

Visual Communication

  • Define visual communication.
  • What is a symbol?
  • Give one example of visual media.

Two-Mark Question Bank

Physics

  • Differentiate between mass and weight.
  • Why are household appliances connected in parallel?
  • Write two applications of concave mirrors.
  • Differentiate between longitudinal and transverse waves.
  • What are the uses of radioisotopes?

Chemistry

  • Differentiate between atom and molecule.
  • Why do elements in the same group show similar properties?
  • Differentiate between saturated and unsaturated solutions.
  • Why should chemical equations be balanced?
  • Differentiate between saturated and unsaturated hydrocarbons.

Biology

  • Differentiate between xylem and phloem.
  • Compare artery and vein.
  • What is reflex action?
  • Write two functions of auxin.
  • Differentiate between genotype and phenotype.
  • What is sustainable development?

Five-Mark Question Bank

Physics

  • Explain Newton's laws of motion with examples.
  • Explain Ohm's law with circuit, formula, and graph.
  • Describe image formation by lenses with ray diagrams.
  • Explain nuclear fission and nuclear fusion.
  • Solve a numerical problem using V = IR and P = VI.

Chemistry

  • Explain the mole concept with formulae.
  • Describe periodic trends in atomic size and metallic character.
  • Explain the types of chemical reactions with examples.
  • Describe tetravalency and catenation of carbon.
  • Explain cleansing action of soap.

Biology

  • Explain photosynthesis with equation.
  • Describe the structure of a neuron.
  • Explain human circulation.
  • Describe sexual reproduction in flowering plants.
  • Explain Mendel's monohybrid cross.
  • Explain types of diseases with examples.

Diagram Practice List

  • Dicot root and dicot stem
  • Neuron
  • Human heart
  • Human reproductive systems
  • Flower structure
  • Stomatal apparatus
  • Ray diagrams for mirrors and lenses
  • Simple electric circuit

Equation and Formula Practice

AreaMust revise
Motion and forceForce, momentum, weight
ElectricityI = Q/t, V = IR, P = VI
HeatHeat transfer and expansion concepts
ChemistryBalanced equations and reaction types
Mole conceptmoles = mass / molar mass

Weekly Practice Method

1. Choose three weak chapters. 2. Write ten one-mark answers. 3. Write five two-mark answers. 4. Write two five-mark answers. 5. Draw two diagrams with labels. 6. Correct answers using textbook and chapter guides.

Final Revision Checklist

  • One-mark definitions revised
  • Difference-between questions practised
  • Formulae and equations written from memory
  • Biology diagrams labelled
  • Model paper attempted under time limit

Frequently Asked Questions

First revise the chapter guide, then answer one-mark and two-mark questions orally, and finally write five-mark and diagram answers in a notebook.
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