{"id":4622,"date":"2026-04-11T12:57:58","date_gmt":"2026-04-11T12:57:58","guid":{"rendered":"https:\/\/ksquareinstitute.in\/blog\/?p=4622"},"modified":"2026-04-11T12:58:00","modified_gmt":"2026-04-11T12:58:00","slug":"physics-thermodynamics-pyqs","status":"publish","type":"post","link":"https:\/\/ksquareinstitute.in\/blog\/physics-thermodynamics-pyqs\/","title":{"rendered":"Top PYQs from Thermodynamics with Concepts & Quick Notes for NEET"},"content":{"rendered":"\n

Thermodynamics is a high-weightage and concept-heavy chapter in NEET Physics. Every year, 2\u20133 questions are directly asked from this unit, often based on fundamental laws and simple applications. The best part is that most Physics Thermodynamics PYQs<\/strong> follow standard patterns, making this chapter highly scoring with the right preparation.<\/p>\n\n\n\n

In this article, we\u2019ll cover the most important Physics Thermodynamics PYQs<\/strong>, along with quick notes and concept-based explanations to help you revise efficiently.<\/p>\n\n\n\n

Why Physics Thermodynamics PYQs Are Important<\/h2>\n\n\n\n

The importance of Thermodynamics PYQs<\/strong> lies in their predictability. NEET commonly asks questions from:<\/p>\n\n\n\n

    \n
  • Laws of thermodynamics<\/li>\n\n\n\n
  • Work, heat, and internal energy<\/li>\n\n\n\n
  • Isothermal and adiabatic processes<\/li>\n\n\n\n
  • Heat engines and efficiency<\/li>\n\n\n\n
  • Specific heat capacities<\/li>\n<\/ul>\n\n\n\n

    Practicing Physics Thermodynamics PYQs<\/strong> ensures you can quickly solve numerical and conceptual problems during the exam.<\/p>\n\n\n\n

    \"Physics
    Illustration of conduction, convection, and radiation<\/figcaption><\/figure>\n\n\n\n

    Quick Notes: Thermodynamics (Last Minute Revision)<\/h2>\n\n\n\n

    Before solving Physics Thermodynamics PYQs<\/strong>, revise these core concepts:<\/p>\n\n\n\n

      \n
    • Heat is energy transfer due to temperature difference<\/li>\n\n\n\n
    • Work is done when volume changes<\/li>\n\n\n\n
    • Internal energy depends only on temperature<\/li>\n\n\n\n
    • First law connects heat, work, and energy<\/li>\n\n\n\n
    • Isothermal process: temperature constant<\/li>\n\n\n\n
    • Adiabatic process: no heat exchange<\/li>\n\n\n\n
    • Efficiency of heat engine is always less than 100%<\/li>\n\n\n\n
    • Second law defines direction of heat flow<\/li>\n<\/ul>\n\n\n\n

      These ideas are repeatedly tested in Thermodynamics PYQs<\/strong>.<\/p>\n\n\n\n

      \n\n\n\n

      Top 10 Physics Thermodynamics PYQs (NEET Level)<\/h2>\n\n\n\n
      \n

      Question 1<\/h3>\n\n\n\n

      State the first law of thermodynamics<\/p>\n\n\n\n

      Answer:<\/strong>
      Heat supplied to a system is used to increase internal energy and do work<\/p>\n\n\n\n

      Concept:<\/strong> Most basic and frequently asked in Thermodynamics PYQs<\/strong><\/p>\n\n\n\n

      \n\n\n\n

      Question 2<\/h3>\n\n\n\n

      What happens to internal energy in an isothermal process?<\/p>\n\n\n\n

      Answer:<\/strong>
      It remains constant<\/p>\n\n\n\n

      \n\n\n\n

      Question 3<\/h3>\n\n\n\n

      What is an adiabatic process?<\/p>\n\n\n\n

      Answer:<\/strong>
      A process in which no heat is exchanged with surroundings<\/p>\n\n\n\n

      \n\n\n\n

      Question 4<\/h3>\n\n\n\n

      What is the efficiency of a heat engine?<\/p>\n\n\n\n

      Answer:<\/strong>
      Ratio of work done to heat supplied<\/p>\n\n\n\n

      \n\n\n\n

      Question 5<\/h3>\n\n\n\n

      Can efficiency of a heat engine be 100%?<\/p>\n\n\n\n

      Answer:<\/strong>
      No<\/p>\n\n\n\n

      Concept:<\/strong> Based on second law \u2014 very common in Physics Thermodynamics PYQs<\/strong><\/p>\n\n\n\n

      \n\n\n\n

      Question 6<\/h3>\n\n\n\n

      What happens when gas expands?<\/p>\n\n\n\n

      Answer:<\/strong>
      Work is done by the system<\/p>\n\n\n\n

      \n\n\n\n

      Question 7<\/h3>\n\n\n\n

      What happens when gas is compressed?<\/p>\n\n\n\n

      Answer:<\/strong>
      Work is done on the system<\/p>\n\n\n\n

      \n\n\n\n

      Question 8<\/h3>\n\n\n\n

      Which process is faster: isothermal or adiabatic?<\/p>\n\n\n\n

      Answer:<\/strong>
      Adiabatic<\/p>\n\n\n\n

      \n\n\n\n

      Question 9<\/h3>\n\n\n\n

      What is the sign of heat absorbed by system?<\/p>\n\n\n\n

      Answer:<\/strong>
      Positive<\/p>\n\n\n\n

      \n\n\n\n

      Question 10<\/h3>\n\n\n\n

      What is the sign of work done by system?<\/p>\n\n\n\n

      Answer:<\/strong>
      Positive<\/p>\n<\/div>\n\n\n\n

      \n\n\n\n

      Additional Practice Questions (High-Yield)<\/h2>\n\n\n\n

      To strengthen your preparation of Thermodynamics PYQs<\/strong>, solve these:<\/p>\n\n\n\n

        \n
      1. What is internal energy?
        Answer:<\/strong> Total energy of molecules<\/li>\n\n\n\n
      2. Heat flows from?
        Answer:<\/strong> Higher temperature to lower temperature<\/li>\n\n\n\n
      3. What is a cyclic process?
        Answer:<\/strong> System returns to initial state<\/li>\n\n\n\n
      4. What happens to internal energy in cyclic process?
        Answer:<\/strong> Zero change<\/li>\n\n\n\n
      5. Which law introduces entropy?
        Answer:<\/strong> Second law<\/li>\n\n\n\n
      6. What is entropy?
        Answer:<\/strong> Measure of disorder<\/li>\n\n\n\n
      7. What happens in reversible process?
        Answer:<\/strong> System remains in equilibrium<\/li>\n\n\n\n
      8. What is irreversible process?
        Answer:<\/strong> Cannot return to original state easily<\/li>\n\n\n\n
      9. Which process has maximum efficiency?
        Answer:<\/strong> Carnot engine<\/li>\n\n\n\n
      10. What is the unit of heat?
        Answer:<\/strong> Joule<\/li>\n<\/ol>\n\n\n\n

        These are based on patterns seen in Physics Thermodynamics PYQs<\/strong>.<\/p>\n\n\n\n

        \n\n\n\n

        Common Mistakes in Physics Thermodynamics PYQs<\/h2>\n\n\n\n

        Students often make mistakes such as:<\/p>\n\n\n\n

          \n
        • Confusing sign conventions<\/li>\n\n\n\n
        • Mixing up isothermal and adiabatic processes<\/li>\n\n\n\n
        • Not understanding first law properly<\/li>\n\n\n\n
        • Ignoring conceptual meaning of entropy<\/li>\n\n\n\n
        • Over-focusing on formulas instead of concepts<\/li>\n<\/ul>\n\n\n\n

          Avoiding these errors improves accuracy in Physics Thermodynamics PYQs<\/strong>.<\/p>\n\n\n\n

          \n\n\n\n

          Final Strategy to Master Physics Thermodynamics PYQs<\/h2>\n\n\n\n

          To score maximum in Physics Thermodynamics PYQs<\/strong>, follow this:<\/p>\n\n\n\n

            \n
          • Focus on understanding laws clearly<\/li>\n\n\n\n
          • Practice conceptual questions regularly<\/li>\n\n\n\n
          • Revise sign conventions<\/li>\n\n\n\n
          • Solve previous year questions multiple times<\/li>\n\n\n\n
          • Strengthen basic theory<\/li>\n<\/ul>\n\n\n\n

            Thermodynamics becomes easy when concepts are clear. Most Physics Thermodynamics PYQs<\/strong> are direct and logic-based.<\/p>\n\n\n\n

            \n\n\n\n

            FAQs on Physics Thermodynamics PYQs<\/h2>\n\n\n\n

            1. How many questions come from Thermodynamics in NEET?<\/h3>\n\n\n\n

            Around 2\u20133 questions are asked every year.<\/p>\n\n\n\n

            2. Are Physics Thermodynamics PYQs repeated?<\/h3>\n\n\n\n

            Yes, many questions repeat with slight variations.<\/p>\n\n\n\n

            3. Which topic is most important?<\/h3>\n\n\n\n

            First law and heat engines are most important.<\/p>\n\n\n\n

            4. Is Thermodynamics difficult for NEET?<\/h3>\n\n\n\n

            It can be easy with conceptual clarity.<\/p>\n\n\n\n

            5. How to revise Physics Thermodynamics PYQs quickly?<\/h3>\n\n\n\n

            Focus on laws, concepts, and PYQs instead of lengthy derivations.<\/p>\n","protected":false},"excerpt":{"rendered":"

            Thermodynamics is a high-weightage and concept-heavy chapter in NEET Physics. Every year, 2\u20133 questions are directly asked from this unit, often based on fundamental laws and simple applications. The best part is that most Physics Thermodynamics PYQs follow standard patterns, making this chapter highly scoring with the right preparation. In this article, we\u2019ll cover the […]<\/p>\n","protected":false},"author":1,"featured_media":4623,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70,2],"tags":[1147,1146,1145,1133,1144,657],"class_list":["post-4622","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-physics","category-neet","tag-entropy-questions-neet","tag-first-law-thermodynamics-neet","tag-heat-engine-pyqs","tag-neet-physics-pyqs","tag-physics-thermodynamics-pyqs","tag-thermodynamics-neet-questions"],"blocksy_meta":{"page_structure_type":"type-1","styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4622","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/comments?post=4622"}],"version-history":[{"count":1,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4622\/revisions"}],"predecessor-version":[{"id":4624,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/posts\/4622\/revisions\/4624"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/media\/4623"}],"wp:attachment":[{"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/media?parent=4622"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/categories?post=4622"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ksquareinstitute.in\/blog\/wp-json\/wp\/v2\/tags?post=4622"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}