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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 questions36 flashcards5 concepts

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Key Topics to Revise

1

1. Latent Heat and Change of State

  • When ice is heated, its temperature stays at 0°C till all the ice melts.
  • After all ice melts, the water temperature rises to 100°C.
  • At 100°C, water stays at the same temperature till all water changes into steam.
2

2. Regulation and Pressure Effect

  • Applying pressure lowers the melting point of ice below 0°C, so ice melts under pressure.
  • Removing pressure restores the melting point to 0°C, so the water refreezes.
  • In the wire-through-ice experiment, the wire penetrates through the ice slab without breaking it.
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3. Anomalous Behaviour of Water

  • Water contracts when heated from 0°C to 4°C instead of expanding.
  • At 4°C, the volume of water is minimum.
  • The density of water is maximum at 4°C.
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4. Dew Point and Humidity

  • Humidity means the moisture in the atmosphere.
  • Water vapour is always present in the atmosphere because water keeps evaporating.
  • Air can contain only a limited amount of water vapour at a given temperature.

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Full Notes

Key Concepts

Heat is energy that flows fromDuring meltingDuring boilingThe melting point is the constantWhen pressure is applied to ice

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.
How to score full marks in Heat — Maharashtra Board Class 10 Science?
Understand the core concepts first, then work through the 43 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

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

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