Thermodynamics MCQs with answers for physics tests in forces

Important Physics Thermodynamics MCQs with Answers

Dive into the world of Thermodynamics MCQs, essential for mastering the intricate realms of physics. These multiple-choice questions serve as invaluable tools for honing your understanding, especially in the initial academic tests of Army, Navy, and Pakistan Air Force. Covering pivotal topics such as heat transfer, laws of thermodynamics, and thermal equilibrium, these MCQs are indispensable for aspirants aiming to excel in PN Cadets examinations.

  • Thermodynamics is the branch of physics that deals with the ________ and ________ of energy. (Transformation, Transfer)
  • The first law of thermodynamics says that energy cannot be ________ or ________, but can only be converted from one form to another. (Created, Destroyed)
  • The second law of thermodynamics states that the entropy ________ of an isolated system never decreases. (Total)
  • The third law of thermodynamics states that the entropy of a perfect ________ approaches zero as its temperature approaches absolute zero. (Crystal)
  • A quantity that measures the disorder or randomness of a system is called ________. (Entropy)
  • Transfer of heat between two objects in direct contact is called ________ transfer. (Behavior)
  • The transfer of heat through the movement of fluids such as air or water is called ________ transfer. (Convection)
  • Transfer of heat by electromagnetic waves, such as from the Sun, is called ________ transfer. (Radiation)
  • The process by which a gas changes from a gaseous state to a liquid state is called ________. (Condensation)
  • The process by which a substance changes directly from a solid to a gas without passing through a liquid state is called ________. (Sublimation)
  • The temperature at which a substance changes from a liquid to a gas at atmospheric pressure is called the ____ point. (Boiling)
  • The temperature at which a substance changes from a solid to a liquid at atmospheric pressure is called the ____ point. (Melting)
  • The maximum workload of a heat engine operating between two temperatures is obtained from the ________ efficiency. (Carnot)
  • The ratio between the amount of heat added to the system and the change in its internal energy is called ________ power. (Heat)
  • The measure of the average kinetic energy of the particles of matter is called ________ temperature. (Thermodynamic)

Essential Thermodynamics MCQs for Army, Navy, and PAF Entrance Exams

Delve into the depths of Thermodynamics MCQs, meticulously crafted to enhance your grasp of fundamental physics principles. Tailored to meet the rigorous standards of Navy Operation Branch assessments, these questions provide a comprehensive overview of thermodynamic processes, including entropy, internal energy, and thermodynamic cycles. Prepare yourself thoroughly to navigate the challenges of Navy Supply Branch examinations with confidence.

  • The process by which a substance changes directly from a gas to a solid without passing through a liquid state is called ________. (Precipitate)
  • The lowest possible temperature at which all molecular motion stops is called ________ zero. (Absolute)
  • The amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius is called its ________ capacity. (Specific heat)
  • The property of a substance that relates the amount of heat transferred to the resulting temperature change is called its ________ capacity. (Heat)
  • The quantity that measures the ability of a substance to conduct heat is called its ____ conductivity. (Heat)
  • The ratio of the amount of heat absorbed or released by a system to the temperature change it causes is called its ________ capacity. (Heat)
  • The point where the phase of a substance changes from solid to liquid or liquid gas at given temperature and pressure is called its ____ point. (Critical)
  • The process by which a substance changes directly from a gas to a solid without passing through a liquid state is called ________. (Sublimation)
  • The process by which a substance changes directly from a solid to a gas without passing through a liquid state is called ________. (Sublimation)
  • The pressure exerted by the vapor of a substance in equilibrium with a liquid or solid phase at a given temperature is called its ________ pressure. (Vapor)
  • The measure of disorder or randomness in a system is called ________. (Entropy)
  • A quantity that measures the degree of spontaneity of a process or reaction is called ________ free energy. (Gibbs)
  • The process by which heat is absorbed from the surroundings is called the ________ process. (Endothermic)
  • A process in which heat is released to the surroundings is called a ________ process. (External)
  • A measure of the average kinetic energy of the particles of a substance is called ________ temperature. (Thermodynamics)
  • The first law of thermodynamics is also known as ________ law of energy. (Conservation)
  • The first law of thermodynamics says that energy cannot ________ or ________, but only be converted from one form to another. (Created, Destroyed)

Thermodynamics MCQs: A Comprehensive Guide for PN Cadets and Naval Aspirants

Unlock the secrets of Thermodynamics MCQs, your gateway to success in the academic tests of Pakistan Air Force. Seamlessly integrating concepts crucial to PAF Aeronautical Engineering, these questions encompass topics like thermodynamic systems, reversible processes, and Carnot engines. Aspiring aviators can rely on these MCQs to bolster their knowledge and ace examinations in PAF Admin & Special Duty Branch.

  • The first law of thermodynamics is the ________ expression for energy. (Conservation)
  • The first law of thermodynamics relates the change in ________ energy of a system to the heat added to the system and the work done on the system. (Internal)
  • The first law of thermodynamics can be expressed mathematically as ΔU = Q – ________, where ΔU represents the change in internal energy, Q represents the heat added to the system, and W represents the work done by the system system (W)
  • The internal energy of a system includes the ________ energy of its particles and the potential energy associated with their positions. (Kinetic)
  • The internal energy of a system is a state function, i.e. it depends only on the ________ and ________ states of the system. (Initial, Final)
  • If the heat added to the system is greater than the work done by the system, the change in internal energy is ________. (Positive)
  • If the heat added to the system is less than the work done by the system, the change in internal energy is ________. (Negative)
  • If the heat added to the system equals the work done by the system, the change in internal energy is ________. (zero)
  • The first law of thermodynamics applies to ________ and ________ systems. (Closed, Open)
  • In an adiabatic process, there is no ________ exchange between the system and its surroundings. (Heat)
  • In an adiabatic process, the change in internal energy is equal to the ________ done in or by the system. (Work)
  • The first law of thermodynamics can be used to analyze various processes such as ________ engines and refrigerators. (Heat)
  • The first law of thermodynamics is the basic principle that governs energy ________________ energy in all physical and chemical processes. (Conversion)
  • The second law of thermodynamics says that in an isolated system the entropy ________ never decreases. (Total)

Thermodynamics MCQs: Key to Excelling in PAF Aeronautical Engineering Examinations

Embark on a journey through Thermodynamics MCQs, strategically designed to cater to the diverse needs of aspiring military personnel. Vital for aspiring engineers in Navy Ordnance Branch, these questions delve into the intricacies of thermodynamic laws, including Boyle’s law, Charles’s law, and Gay-Lussac’s law. Strengthen your foundation in physics to excel in Navy Weapon Engineering Branch examinations.

  • The second law of thermodynamics is a statement about the ________ of natural processes. (Direction).
  • The second law of thermodynamics defines the concept of ________, which is a measure of disorder or randomness in a system. (Entropy)
  • The second law of thermodynamics states that in every natural process, the entropy of the universe increases by ________. (Total)
  • The increase in entropy of the system and its surroundings must be ________ than zero in a spontaneous process. (Larger)
  • The second law of thermodynamics states that energy tends to dissipate or dissipate, resulting in an increase in ________ in a closed system. (Entropy)
  • The second law of thermodynamics predicts that processes occurring spontaneously in one direction will not ________ in the opposite direction. (Reversible)
  • According to the second law of thermodynamics, it is impossible to build a ________ engine that converts all heat into work. (Complete)
  • The second law of thermodynamics places limits on the efficiency of a ________ engine. (Heat)
  • The second law of thermodynamics is consistent with the observation that ________ flows from higher to lower temperatures. (Heat)
  • The second law of thermodynamics is based on statistical principles that describe the ________ behavior of large systems. (Probability)
  • The second fundamental law of thermodynamics is supported by the concept of ________ probability, which states that the most likely state of a system is the one with the most microstates. (Boltzmann)
  • The second law of thermodynamics explains why heat never flows spontaneously from ________ object to ________ object. (Cold, Hot)
  • The second law of thermodynamics is the basis for the concept of ________ and the arrow of time. (Irreversibility)
  • The Second Law of Thermodynamics is a fundamental principle that governs the behavior of ________ systems and has wide applications in various fields. (Physical)
  • The third law of thermodynamics states that the entropy of a perfect ________ approaches zero as its temperature approaches absolute zero. (Crystal)
  • The third law of thermodynamics provides a reference point for measuring the ________ of a substance. (Entropy)

Thermodynamics MCQs: Essential Prep for Technical Cadet Course and Beyond

Immerse yourself in the realm of Thermodynamics MCQs, indispensable for aspirants vying for coveted positions in the Navy Education Branch. These questions traverse the expansive landscape of thermodynamic processes, exploring concepts such as heat capacity, enthalpy, and thermal expansion. Equip yourself with the knowledge necessary to excel in examinations and embark on a fulfilling career in naval education.

  • The third law of thermodynamics means that it is impossible to reach ________ zero temperature. (Absolute)
  • The third law of thermodynamics is also known as ________ law of thermodynamics. (Nernst)
  • The third law of thermodynamics states that it is impossible to cool a substance ________ to zero temperature in a finite number of steps. (Absolute)
  • The third law of thermodynamics is based on the assumption that the entropy of a perfect crystal at absolute zero is ________. (zero)
  • The third law of thermodynamics is closely related to the concept of ________ disorder at absolute zero. (Complete)
  • The third law of thermodynamics provides a theoretical basis for understanding the behavior of ________ materials at low temperatures. (Compressed)
  • According to the third law of thermodynamics, when the temperature of a substance approaches absolute zero, the substance becomes ________ more ordered. (Structure)
  • The third law of thermodynamics is particularly important in the study of ________ and superconductivity. (Cryogenics)
  • The third law of thermodynamics is an extension of the ________ law of thermodynamics. (Second)
  • The third fundamental law of thermodynamics is based on the understanding that at absolute zero, the particles of matter enter a state of ________ motion. (Minimum)
  • The third law of thermodynamics is based on the concept of the energy level of a ________ particle in a perfect crystal at absolute zero. (Quantified)
  • The third law of thermodynamics affects the behavior of materials at extreme ________ temperatures. (Low)
  • The third law of thermodynamics is a basic principle of thermodynamics that helps explain the behavior of substances at ________ temperatures. (Alt)

Thermodynamics MCQs: Ideal for GD Pilots and Air Force Hopefuls

Navigate the complexities of Thermodynamics MCQs, an indispensable resource for prospective GD Pilots. Covering essential topics such as thermodynamic equilibrium, adiabatic processes, and thermal conduction, these questions are tailored to meet the rigorous standards of the Technical Cadet Course. Prepare yourself comprehensively to soar to new heights in Army Education Officers examinations.

  • Enthalpy is a thermodynamic property that represents the ________ of a system. (Total Energy)
  • Enthalpy is defined as the sum of the ________ and ________ energies of a system. (Internal, External)
  • Enthalpy is usually denoted by the symbol ________. (H)
  • Enthalpy is a state function, which means it depends only on the state of ________ and ________ of the system. (Initial, Final)
  • Enthalpy change ΔH represents the difference in enthalpy between the ________ and ________ states of the system. (Initial, Final)
  • The enthalpy change of a process can be determined by measuring the ________ transferred to or from the system at constant pressure. (Heat)
  • The enthalpy change is positive for a ________ process in which heat is absorbed by the system. (Endothermic)
  • The enthalpy change is negative for a ________ process in which heat is released from the system. (External)
  • Enthalpy change can be calculated using the formula ΔH = ________ – ________, where Q represents the heat added or released and P is the pressure. (Q, PΔV)
  • Enthalpy change is usually measured in units of ________. (Joules)
  • The enthalpy change of a reaction is often expressed by ________ of the reactant. (Mole)
  • The enthalpy change of a reaction can be determined experimentally using ________ law calorimetry. (Hessin)
  • The enthalpy change of a chemical reaction can be calculated by the ________ law of thermodynamics. (First)
  • The enthalpy change in a chemical reaction is given by the equation ________. (Thermochemical)
  • The change in enthalpy during a phase transition, such as from solid to liquid or from liquid to gas, is called ________ heat. (Latent)
  • Specific heat capacity is the amount of heat energy required to raise the temperature of ________ grams of matter by 1 degree Celsius. (One)

Thermodynamics MCQs: Key to Excelling in PAF Aeronautical Engineering Examinations

Unravel the mysteries of Thermodynamics MCQs, meticulously curated to meet the diverse needs of Army EME Officers. From the principles of thermodynamic work to the intricacies of heat engines, these questions provide a solid foundation for success in military examinations. Arm yourself with knowledge and expertise to excel in the challenging terrain of Army logistics and supply chain management.

  • The specific heat capacity is usually indicated by the symbol ________. (c)Specific heat capacity is the ________ property of matter. (Internal)
  • Molar heat capacity is the amount of heat energy required to raise the temperature of ________ moles of a substance by 1 degree Celsius. (One)
  • Molar heat capacity is usually indicated by the symbol ________.(C )
  • The specific heat capacity of water is ________ J/g·°C. (4.18)
  • The molar heat capacity of a substance can be calculated by dividing the ________ heat capacity by the number of moles of the substance. (Total)
  • The unit of specific heat capacity is ________ per gram per degree Celsius. (J/g·°C)
  • The unit of molar heat capacity is ________ per mole per degree Celsius. (J/mol °C).
  • The specific heat capacity of a substance is determined experimentally with a ________ calorimeter. (calorimetry)
  • The molar heat capacity of a substance depends on its ________ and ________ states. (Chemical, Physical)
  • The specific heat capacity of a substance is related to its ________ properties, such as molecular structure and intermolecular forces. (Internal)
  • The specific heat capacity of a substance is different in different ________ states such as solid, liquid and gas. (Physical)
  • The molar heat capacity of a substance can vary with ________ conditions such as temperature and pressure. (Thermodynamic)
  • Specific heat capacity and molar heat capacity are important parameters in ________ calculations and the study of energy transfer in thermodynamic processes. (Hot).

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