Physical Chemistry MCQs

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1. Which of the following is not a state function?





2. The process of conversion of a solid directly into vapor without passing through the liquid state is called:





3. Boyleā€™s law relates:





4. The gas constant R in the ideal gas equation PV = nRT represents:





5. Which of the following is an intensive property of a system?





6. The energy associated with the motion of molecules in a substance is:





7. The enthalpy change for a chemical reaction at constant pressure is equal to:





8. The change in Gibbs free energy (Ī”G) of a system at constant temperature and pressure is given by:





9. Which statement about catalysts is correct?





10. The process of a substance moving from a gas to a solid without passing through the liquid phase is called:





11. Which statement about ideal gases is false?





12. Which of the following expressions represents the rate of a chemical reaction?





13. The equilibrium constant (Kc) expression for the reaction aA + bB ā‡Œ cC + dD is:





14. An exothermic reaction is one in which:





15. Which law states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass?





16. The process of removal of electrons from an atom or ion is called:





17. Which type of bond involves the sharing of electrons between atoms?





18. The pH of a neutral solution at 25Ā°C is approximately:





19. Which of the following is a strong acid?





20. The process of conversion of an acid and a base into water and a salt is called:





21. The principle that states that a system at equilibrium will adjust itself to counteract any stress applied to it is known as:





22. Which of the following is a colligative property of a solution?





23. The energy required to remove an electron from an atom or ion in the gas phase is called:





24. The process in which a substance absorbs moisture from the atmosphere until it dissolves in the absorbed water is known as:





25. The process of conversion of a liquid into vapor at any temperature below its boiling point is called:





26. Which of the following is an intensive property of a substance?





27. The specific heat capacity of a substance is defined as the amount of heat required to raise the temperature of:





28. Which of the following factors does not affect the rate of a chemical reaction?





29. The rate constant of a reaction depends on:





30. Which statement is true regarding an isothermal process?





31. Which of the following statements is true for an adiabatic process?





32. The relationship between the partial pressure of a gas in a mixture and its mole fraction is given by:





33. Which of the following factors affect the rate of diffusion of a gas?





34. The energy associated with the position of particles in a system is called:





35. Which statement best describes a reversible process in thermodynamics?





36. The process of dissolving of a gas in a liquid at a particular temperature is described by:





37. Which of the following is a non-volatile solute?





38. The heat capacity of a substance depends on:





39. Which of the following is an example of a spontaneous process?





40. The process of a solute forming crystals in a solution is called:





41. Which of the following is a state function?





42. Which law states that the pressure of a gas is directly proportional to its absolute temperature, provided that the volume remains constant?





43. The ideal gas law can be written as:





44. Which statement is true regarding an exothermic reaction?





45. The rate of a first-order reaction depends on:





46. Which of the following is a colligative property of a solution?





47. The process of a gas becoming a liquid is called:





48. Which of the following is true for an endothermic reaction?





49. Which law states that the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of the individual gases?





50. The process of conversion of a liquid into vapor at its boiling point is called:





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