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Thermodynamics is the branch of Physical Chemistry that deals with the study of energy changes associated with physical and chemical processes. It helps explain how heat and work are related to chemical reactions.

This chapter is an important topic in NEET Chemistry and frequently appears in both conceptual and numerical questions.

What is Thermodynamics?

Thermodynamics studies the transformation of energy from one form to another and the conditions under which these transformations occur.

Important Concepts

System and Surroundings

A system is the part of the universe under study, while everything outside the system is called the surroundings.

Heat and Work

Heat and work are two important modes through which energy is transferred between a system and its surroundings.

THE RMODYNAMICS
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Heat and Work

Heat and work are two important modes through which energy is transferred between a system and its surroundings.

Laws of Thermodynamics

The laws of thermodynamics describe the principles governing energy changes and the direction of natural processes.

Enthalpy

Enthalpy is a thermodynamic property used to measure the heat changes occurring during chemical reactions.

Applications of Thermodynamics

  • Chemical industries.
  • Energy production systems.
  • Engineering processes.
  • Biological systems.
  • Environmental studies.

Importance for NEET

Thermodynamics is a high-weightage chapter in NEET Chemistry. Questions are commonly asked on heat, work, enthalpy, thermodynamic processes, and laws of thermodynamics. A strong understanding of this chapter helps students solve numerical and conceptual problems effectively.

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FINGERTIPS Physics, Chemistry & Biology
MTG NTA NEET Home Test Series For 2026 Exam