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Chapter 9 of 20
Revision Notes

Heat

Maharashtra Board · Class 10 · Science

Quick revision notes for Heat — Maharashtra Board Class 10 Science. Key concepts, formulas, and definitions for last-minute revision.

43 questions25 flashcards5 concepts

Key Topics to Revise

1

Latent Heat

  • During phase transitions (solid to liquid, liquid to gas), temperature remains constant even when heat is supplied
  • Latent heat of fusion: Heat absorbed when solid converts to liquid at constant temperature (melting point)
  • Latent heat of vaporization: Heat absorbed when liquid converts to gas at constant temperature (boiling point)
2

Regelation

  • Process where ice melts due to pressure and refreezes when pressure is removed
  • Melting point of ice decreases under pressure
  • Explains how ice pieces stick together when pressed
3

Anomalous Behavior of Water

  • Water contracts from 0°C to 4°C instead of expanding (anomalous behavior)
  • Maximum density of water occurs at 4°C
  • Above 4°C, water expands normally with temperature increase
4

Specific Heat Capacity

  • Different materials require different amounts of heat for same temperature change
  • Water has highest specific heat capacity (1 cal/g°C or 4200 J/kg°C)
  • Metals generally have low specific heat capacities

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Full Notes

Key Concepts

The heat energy absorbed or releasedThe amount of heat energy requiredUnlike most substancesThe phenomenon where ice melts underHumidity is the amount of water

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Frequently Asked Questions

What are the important topics in Heat for Maharashtra Board Class 10 Science?

Heat covers several key topics that are frequently asked in Maharashtra Board Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.

Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.