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2026 /
Quiz 5

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MDCAT Practice Test - Practice Test - Chemistry - Liquids - 2026 Quiz

Attempt 10 MCQs on MDCAT Practice Test - Practice Test - Chemistry - Liquids (Year 2026) | Quiz 5

41. Which factors increase the rate of evaporation?

Increases with temperature
Increases with surface area
Decreases with high humidity
All of these

42. What is the state when evaporation and condensation rates equal?

Dynamic equilibrium
Static equilibrium
No equilibrium
Critical point

43. What is the Clausius-Clapeyron equation used for?

Calculate vapor pressure
Calculate boiling point
Calculate heat of fusion
Calculate surface tension

44. What is the heat required to vaporize one mole of liquid at its boiling point?

Enthalpy of vaporization
Enthalpy of fusion
Enthalpy of sublimation
Specific heat

45. What is the approximate enthalpy of vaporization of water?

40.7 kJ/mol
18.0 kJ/mol
6.0 kJ/mol
100 kJ/mol

46. How does reducing external pressure affect boiling point?

Boiling point decreases
Boiling point increases
Boiling point unchanged
Liquid solidifies

47. Which rule gives a constant entropy of vaporization?

Trouton's rule
Clausius-Clapeyron equation
Raoult's law
Henry's law

48. How does vapor pressure change with temperature?

Exponential increase
Linear increase
Logarithmic increase
No increase

49. What is the main difference between evaporation and boiling?

Boiling occurs throughout
Boiling only at surface
Evaporation occurs throughout
Both same

50. What term describes a liquid that evaporates easily?

Volatile
Non-volatile
Viscous
Dense

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