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2026 /
Quiz 8

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MDCAT Practice Test - Practice Test - Chemistry - Gases - 2026 Quiz

Attempt 10 MCQs on MDCAT Practice Test - Practice Test - Chemistry - Gases (Year 2026) | Quiz 8

71. Calculate partial pressure of CO₂ using Dalton's law.

0.3 atm
0.5 atm
0.7 atm
1.0 atm

72. What is Dalton's law?

P_total = ΣP_i
P_total = P_i × n_i
P_total = P_i / n_i
P_total = P_i²

73. Calculate total pressure of a gas mixture.

2.46 atm
1.23 atm
4.92 atm
0.82 atm

74. Convert to STP using combined gas law.

4.10 L
2.05 L
8.20 L
1.37 L

75. Which type of gas obeys PV = nRT under all conditions?

Ideal gases
Real gases
Both
Neither

76. At which conditions do real gases deviate most from ideality?

High pressure, low temperature
Low pressure, high temperature
Low pressure, low temperature
High pressure, high temperature

77. What is the compressibility factor?

Z = PV/nRT
Z = nRT/PV
Z = P/nRTV
Z = V/nRTP

78. What is the compressibility factor of an ideal gas?

Z = 1
Z > 1
Z < 1
Z = 0

79. What is Z at very high pressure?

Z > 1
Z < 1
Z = 1
Z = 0

80. Which equation corrects ideal gas law for real gases?

Van der Waals equation
Virial equation
Boyle's law
Charles's law

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