Solutions | Physical Chemistry | GPAT Mock Test

Welcome to the GPAT Mock Test on Solutions! This quiz is expertly designed to help you master the fundamental concepts of Physical Chemistry, a critical section of the GPAT syllabus. It covers a comprehensive range of topics, including solubility principles, factors affecting it like cosolvency and pH, different types of solutions, Henry’s Law, Critical Solution Temperature, and the Nernst Partition Law. You will also be tested on various methods of expressing concentration and related calculations such as Molarity, Molality, and Mole Fraction. This test consists of 25 multiple-choice questions to rigorously evaluate your understanding. After submitting your answers, you can review your score and download all questions with the correct answers in a PDF format for future revision. Good luck!

1. For a substance whose dissolution process is endothermic, how does its solubility in a liquid solvent typically change with an increase in temperature?

2. The technique of adding a third substance to a two-component system to increase the solubility of one component is known as:

3. According to Henry’s Law, the solubility of a gas in a liquid is directly proportional to:

4. The phenol-water system exhibits an Upper Critical Solution Temperature (UCST). What does this mean?

5. Nernst’s Distribution Law (Law of Partitioning) is applicable for a solute that:

6. How many grams of NaOH (M.W. = 40 g/mol) are required to prepare 500 mL of a 0.1 M solution?

7. Which concentration unit is temperature-independent and preferred for studying colligative properties?

8. The solubility of a weakly acidic drug, like Aspirin, would be highest in a solution with:

9. What is the mole fraction of ethanol (C2H5OH, M.W. = 46 g/mol) in a solution containing 46 g of ethanol and 90 g of water (H2O, M.W. = 18 g/mol)?

10. The phenomenon where the solubility of a sparingly soluble salt is decreased by the addition of a soluble salt having a common ion is called:

11. The primary solute-solvent interaction responsible for the dissolution of NaCl in water is:

12. A solution containing the maximum amount of solute that can be dissolved in a solvent at a given temperature is called:

13. The partition coefficient (Log P) is a measure of a drug’s:

14. What is the molality (m) of a solution prepared by dissolving 58.5 g of NaCl (M.W. = 58.5 g/mol) in 500 g of water?

15. A 10% w/v solution of glucose means:

16. Which of the following systems exhibits a Lower Critical Solution Temperature (LCST)?

17. A solution is prepared by dissolving 18g of glucose (M.W. = 180 g/mol) in 90g of water. The mole fraction of glucose in the solution is:

18. The principle “like dissolves like” primarily refers to similarity in:

19. A solubility curve plots solubility against which variable?

20. The partition law is used in pharmacy for:

21. Molarity is defined as the number of moles of solute per:

22. What happens to the solubility of most gases in liquids as the temperature increases?

23. Which of the following pairs of liquids is completely miscible at room temperature?

24. The process of surrounding solute particles with solvent particles is known as:

25. If the density of a 2.0 M solution of NaCl in water is 1.08 g/mL, what is its molality? (M.W. of NaCl = 58.5 g/mol)

Author

  • G S Sachin
    : Author

    G S Sachin is a Registered Pharmacist under the Pharmacy Act, 1948, and the founder of PharmacyFreak.com. He holds a Bachelor of Pharmacy degree from Rungta College of Pharmaceutical Science and Research and creates clear, accurate educational content on pharmacology, drug mechanisms of action, pharmacist learning, and GPAT exam preparation.

    Mail- Sachin@pharmacyfreak.com

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