Pharmacy Practice MCQ, in this article we will solve, Practice MCQ under subject physical pharmaceutics. Read following article for your reference.
Solubility Of Gases In Liquids, Binary Solutions, Roult’s Law » PHARMACAREERS
- What does Raoult’s Law state?
- A) The vapor pressure of a solvent is equal to the vapor pressure of the solute.
- B) The vapor pressure of a solvent above a solution is equal to the vapor pressure of the pure solvent multiplied by its mole fraction in the solution.
- C) The solubility of a gas in a liquid is directly proportional to the pressure of the gas.
- D) The solubility of a gas in a liquid is inversely proportional to the temperature.
- Which of the following is an ideal solution according to Raoult’s Law?
- A) A solution where the solute and solvent have different molecular sizes.
- B) A solution where the solute and solvent have similar molecular sizes and interactions.
- C) A solution where the solute is a gas and the solvent is a liquid.
- D) A solution where the solute is a solid and the solvent is a liquid.
- In Raoult’s Law, what does ( \chi_{\text{solvent}} ) represent?
- A) Mole fraction of the solute.
- B) Mole fraction of the solvent.
- C) Vapor pressure of the solute.
- D) Vapor pressure of the solvent.
- What happens to the vapor pressure of a solution when a non-volatile solute is added?
- A) It increases.
- B) It decreases.
- C) It remains the same.
- D) It fluctuates.
- Which law is used to describe the solubility of gases in liquids?
- A) Raoult’s Law
- B) Henry’s Law
- C) Dalton’s Law
- D) Boyle’s Law
- According to Raoult’s Law, what is the relationship between the vapor pressure of a solution and the mole fraction of the solvent?
- A) Directly proportional
- B) Inversely proportional
- C) No relationship
- D) Exponentially proportional
- What is the effect of temperature on the solubility of gases in liquids?
- A) Solubility increases with temperature.
- B) Solubility decreases with temperature.
- C) Solubility remains constant.
- D) Solubility first increases then decreases.
- Which of the following is NOT an assumption of Raoult’s Law?
- A) The solution is ideal.
- B) The solute is non-volatile.
- C) The interactions between solute and solvent are the same as those between solvent molecules.
- D) The solute has a significant vapor pressure.
- What is the partial vapor pressure of a component in an ideal solution according to Raoult’s Law?
- A) The product of the mole fraction of the component and the total vapor pressure.
- B) The product of the mole fraction of the component and the vapor pressure of the pure component.
- C) The sum of the mole fractions of all components.
- D) The difference between the vapor pressures of the pure components.
- Which of the following best describes an ideal solution?
- A) A solution that follows Raoult’s Law at all concentrations.
- B) A solution that follows Henry’s Law at all concentrations.
- C) A solution that shows positive deviation from Raoult’s Law.
- D) A solution that shows negative deviation from Raoult’s Law.
- What is the main factor affecting the solubility of gases in liquids?
- A) Temperature
- B) Pressure
- C) Nature of the gas
- D) All of the above
- In a binary solution, what does the term ‘binary’ refer to?
- A) Two solvents
- B) Two solutes
- C) One solute and one solvent
- D) Two gases
- What is the significance of Raoult’s Law in physical pharmaceutics?
- A) It helps in determining the solubility of drugs.
- B) It helps in predicting the stability of drug formulations.
- C) It helps in understanding the vapor pressure of solutions.
- D) All of the above
- Which of the following is a limitation of Raoult’s Law?
- A) It applies only to ideal solutions.
- B) It applies to all types of solutions.
- C) It does not consider the interactions between solute and solvent.
- D) It is only applicable at high temperatures.
- What is the effect of adding a volatile solute to a solvent on the vapor pressure of the solution?
- A) It increases the vapor pressure.
- B) It decreases the vapor pressure.
- C) It has no effect on the vapor pressure.
- D) It depends on the nature of the solute.
- What is the role of mole fraction in Raoult’s Law?
- A) It determines the concentration of the solute.
- B) It determines the concentration of the solvent.
- C) It determines the partial vapor pressure of each component.
- D) It determines the total vapor pressure of the solution.
- Which of the following is true for an ideal solution?
- A) The enthalpy of mixing is zero.
- B) The volume of mixing is zero.
- C) The solution follows Raoult’s Law.
- D) All of the above
- What is the effect of pressure on the solubility of gases in liquids?
- A) Solubility increases with pressure.
- B) Solubility decreases with pressure.
- C) Solubility remains constant.
- D) Solubility first increases then decreases.
- Which of the following is an example of a binary solution?
- A) Salt in water
- B) Sugar in water
- C) Oxygen in water
- D) All of the above
- What is the relationship between the vapor pressure of a solution and the vapor pressure of the pure solvent in Raoult’s Law?
- A) The vapor pressure of the solution is higher.
- B) The vapor pressure of the solution is lower.
- C) The vapor pressure of the solution is the same.
- D) The vapor pressure of the solution is independent of the pure solvent.
- Which of the following factors does NOT affect the solubility of gases in liquids?
- A) Temperature
- B) Pressure
- C) Nature of the gas
- D) Color of the gas
- What is the significance of the mole fraction in a solution?
- A) It indicates the proportion of solute in the solution.
- B) It indicates the proportion of solvent in the solution.
- C) It indicates the proportion of each component in the solution.
- D) It indicates the total concentration of the solution.
- Which of the following statements is true about Raoult’s Law?
- A) It applies to non-ideal solutions.
- B) It applies to ideal solutions.
- C) It applies to solutions with strong solute-solvent interactions.
- D) It applies to solutions with weak solute-solvent interactions.
- What is the effect of adding a non-volatile solute to a solvent on the boiling point of the solution?
- A) It increases the boiling point.
- B) It decreases the boiling point.
- C) It has no effect on the boiling point.
- D) It depends on the nature of the solute.
- Which of the following is a characteristic of an ideal solution?
- A) The solution follows Raoult’s Law.
- B) The solution shows positive deviation from Raoult’s Law.
- C) The solution shows negative deviation from Raoult’s Law.
- D) The solution does not follow Raoult’s Law.
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