Questions About Solute and Solvent
Solute and Solvent – Multiple Choice Questions
1. In a solution of salt water, the solute is:
A) Water
B) Salt
C) Air
D) Oil
E) Alcohol
2. What is the solvent in a sugar-water solution?
A) Sugar
B) Salt
C) Water
D) Carbon
E) Ice
3. Which of the following best defines a solute?
A) The substance in greatest amount
B) The substance that dissolves the solvent
C) The substance being dissolved
D) The liquid component of all mixtures
E) A nonpolar substance
4. Which of the following is not a characteristic of a solvent?
A) It dissolves the solute
B) It is usually present in greater amount
C) It evaporates first
D) It determines the phase of the solution
E) It can be a gas, liquid, or solid
5. In an aqueous solution, the solvent is always:
A) Ethanol
B) Sugar
C) Oil
D) Water
E) Acid
6. Which of the following can act as both a solute and a solvent in different solutions?
A) Water only
B) Salt only
C) Alcohol
D) Carbon dioxide
E) Oil
7. What term is used for a solution where the solute does not dissolve in the solvent?
A) Homogeneous
B) Aqueous
C) Immiscible
D) Saturated
E) Heterogeneous
8. Which factor does not affect how well a solute dissolves in a solvent?
A) Temperature
B) Stirring
C) Size of the container
D) Surface area of solute
E) Nature of solute and solvent
9. What kind of mixture is formed when a solute completely dissolves in a solvent?
A) Suspension
B) Emulsion
C) Colloid
D) Homogeneous solution
E) Heterogeneous mixture
10. What is an example of a gas solute in a liquid solvent?
A) Salt in water
B) Oxygen in water
C) Oil in vinegar
D) Sugar in tea
E) Sand in water
11. Which pair correctly identifies a solute-solvent relationship?
A) Milk in coffee → Solute: milk
B) Sugar in water → Solute: sugar
C) Air in helium → Solvent: air
D) Salt in water → Solvent: salt
E) Alcohol in water → Solute: water
12. In soda (carbonated water), the solute is:
A) Water
B) Sugar
C) Carbon dioxide gas
D) Ice
E) Flavoring
13. What do we call a solid dissolved in a liquid?
A) Gaseous solution
B) Suspension
C) Solid solution
D) Liquid solution
E) Heterogeneous mixture
14. Which of the following is a universal solvent?
A) Acetone
B) Ethanol
C) Mercury
D) Water
E) Methanol
15. When water is the solvent, the solution is called:
A) Soluble
B) Immiscible
C) Aqueous
D) Diluted
E) Saturated
16. If no more solute can dissolve at a given temperature, the solution is:
A) Diluted
B) Supersaturated
C) Saturated
D) Concentrated
E) Volatile
17. What happens to the solubility of most solids in liquids as temperature increases?
A) It decreases
B) It stays the same
C) It increases
D) It depends on the solvent
E) It fluctuates
18. Which of the following is not a possible state of a solvent?
A) Solid
B) Liquid
C) Gas
D) Plasma
E) All are possible
19. What determines if a solute will dissolve in a solvent?
A) Mass of solute only
B) pH of the solution only
C) "Like dissolves like" principle
D) Whether it's polar or nonpolar
E) Both C and D
20. Which pair is an example of a solid solvent and a gas solute?
A) Water and oxygen
B) Hydrogen and metal
C) Palladium and hydrogen
D) Air and smoke
E) Salt and chlorine gas
Answers with Explanations
1. B – The solute is the salt; water is the solvent.
2. C – Water is the solvent; sugar is the solute.
3. C – A solute is the substance being dissolved.
4. C – The solvent does not necessarily evaporate first.
5. D – In aqueous solutions, water is the solvent.
6. C – Alcohol can act as both solute (in water) or solvent (for iodine).
7. E – A heterogeneous mixture occurs when the solute does not dissolve.
8. C – The size of the container doesn’t directly affect solubility.
9. D – When solute fully dissolves, it creates a homogeneous solution.
10. B – Oxygen gas in water is a gas–liquid solution.
11. B – In sugar water, sugar is the solute.
12. C – The main solute in soda is CO₂ gas.
13. D – Solid–liquid combinations like salt in water are liquid solutions.
14. D – Water is often called the universal solvent.
15. C – A solution where water is the solvent is called aqueous.
16. C – A solution where no more solute can dissolve is saturated.
17. C – Most solids dissolve more as temperature increases.
18. D – Plasma is not a common solvent in chemistry.
19. E – Both "like dissolves like" and polarity determine solubility.
20. C – Hydrogen gas dissolving in palladium (solid) is a solid–gas solution.
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