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NCERT Textbook: Thermodynamics | Chemistry Class 11 - NEET PDF Download

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FAQs on NCERT Textbook: Thermodynamics - Chemistry Class 11 - NEET

1. What is thermodynamics?
Ans. Thermodynamics is a branch of physics that deals with the study of energy and its transformation from one form to another. It focuses on understanding the behavior of heat and work in relation to different systems.
2. What are the laws of thermodynamics?
Ans. The laws of thermodynamics are fundamental principles that govern energy and its interactions in various systems. They include: - The first law of thermodynamics, also known as the law of energy conservation, states that energy cannot be created or destroyed, only transferred or transformed. - The second law of thermodynamics states that the entropy of an isolated system always increases over time. - The third law of thermodynamics states that it is impossible to reach absolute zero temperature through a finite number of processes.
3. How does thermodynamics apply to real-life situations?
Ans. Thermodynamics has numerous real-life applications. It is used in the design and optimization of engines, refrigeration systems, power plants, and chemical processes. It helps in understanding the efficiency and performance of these systems and enables engineers to make improvements and reduce energy wastage.
4. What is the difference between heat and work in thermodynamics?
Ans. In thermodynamics, heat and work are two forms of energy transfer. Heat is the transfer of energy due to a temperature difference, while work is the transfer of energy due to a force acting through a distance. Heat transfer occurs spontaneously, following the temperature gradient, while work transfer requires an external agent to apply a force.
5. How is the efficiency of an engine calculated in thermodynamics?
Ans. The efficiency of an engine is calculated using the formula: Efficiency = (Useful work output / Heat input) * 100% The useful work output is the work done by the engine, and the heat input is the heat energy supplied to the engine. The efficiency gives a measure of how effectively the engine converts heat energy into useful work, with a higher percentage indicating better efficiency.
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