🔥

Heat

Class 10 Science - Chapter 5 Important Questions

🔥 Heat Transfer | Specific Heat | Latent Heat | Thermal Expansion

📋 100% ORIGINAL EDUCATIONAL CONTENT

Created Specifically for Gyan Spark Website
Copyright-Free & Safe for Google AdSense
Conceptually Aligned with Maharashtra Board
Heat Fact: Water has a high specific heat capacity (4186 J/kg°C), which is why it takes longer to heat up and cool down compared to other substances. This property moderates Earth's climate!
📘 Subject: Science Part 1
📗 Chapter 5: Heat
🎓 Class: 10 (Maharashtra Board)
✅ Status: Original & Copyright-Free
Very Short Answer Questions
1–2 Marks Each
  1. What is heat?
    Basic Definition
  2. Define temperature.
    Temperature Concept
  3. Write the SI unit of heat.
    Unit Specification
  4. Write the SI unit of temperature.
    Unit Specification
  5. What is meant by specific heat capacity?
    Thermal Property
  6. What is latent heat?
    Phase Change Heat
  7. What is melting point?
    Phase Transition Point
  8. What is boiling point?
    Phase Transition Point
  9. Name any two good conductors of heat.
    Material Properties
  10. What is radiation?
    Heat Transfer Mode
Short Answer Questions
3–4 Marks Each
  1. Differentiate between heat and temperature.
    Comparative Analysis
  2. Explain the effect of heat on substances.
    Thermal Effects
  3. What is expansion? Write its types.
    Thermal Expansion
  4. Explain melting and boiling.
    Phase Changes
  5. Explain evaporation and its cooling effect.
    Evaporation Process
  6. Define latent heat of fusion and latent heat of vaporization.
    Latent Heat Types
    L = Q/m (Latent heat formula)
  7. Explain specific heat capacity with formula.
    Specific Heat Concept
    c = Q/(mΔT) or Q = mcΔT
  8. Explain conduction with one example.
    Heat Transfer Mode
  9. Explain convection with one example.
    Heat Transfer Mode
  10. Explain radiation with one example.
    Heat Transfer Mode
Long Answer Questions
5 Marks Each
  1. Explain the three modes of heat transfer in detail.
    Heat Transfer Modes
    Three Modes:
    1. Conduction: Through direct contact
    2. Convection: Through fluid movement
    3. Radiation: Through electromagnetic waves
  2. Describe change of state of matter with neat explanation.
    Phase Changes
  3. Explain expansion due to heat and its applications.
    Thermal Expansion & Applications
  4. Explain specific heat capacity and its importance.
    Specific Heat & Significance
  5. Write a detailed note on evaporation and factors affecting it.
    Evaporation Process
Numerical / Application-Based Questions
Problem Solving
  1. Calculate the heat required to raise the temperature of a given mass using the formula Q = mcΔT.
    Heat Calculation
    Q = m × c × ΔT
  2. Find the change in temperature when heat supplied and mass are given.
    Temperature Change
    ΔT = Q/(m × c)
  3. Compare two substances on the basis of their specific heat capacities.
    Comparative Analysis
  4. Identify the correct formula used to calculate heat energy.
    Formula Identification
  5. Solve simple problems based on latent heat.
    Latent Heat Problems
    Q = m × L (where L is latent heat)
Reasoning-Based Questions
Conceptual Understanding
  1. Why do coastal areas have moderate climate?
    Climate Reasoning
  2. Why do railway tracks have gaps between them?
    Engineering Application
  3. Why do we wear woollen clothes in winter?
    Daily Life Application
  4. Why does evaporation cause cooling?
    Scientific Principle
  5. Why are cooking vessels usually made of metals?
    Material Selection Reasoning