Quiz for Real and ideal gases

Q1: Which law assumes no intermolecular forces between gas molecules?

A. Real gas law B. Ideal gas law C. Van der Waals equation D. Boyle’s law

Q2: Which factor causes real gases to deviate from ideal behavior?

A. High temperature B. High pressure C. Low pressure D. All gases behave ideally

Q3: The Van der Waals equation corrects ideal gas law for:

A. Molecular size and attraction forces B. Temperature variation C. Volume changes only D. Pressure only

Q4: In Van der Waals equation, "a" corrects for:

A. Pressure B. Volume C. Intermolecular attractions D. Molecular collisions

Q5: Parameter "b" in Van der Waals equation accounts for:

A. Attractive forces B. Effective molecular volume C. Pressure correction D. Temperature correction

Q6: Which gas behaves most like an ideal gas?

A. Hydrogen B. Oxygen C. Carbon dioxide D. Water vapor

Q7: At very low temperature, gases:

A. Become more ideal B. Behave less ideally C. Follow gas laws perfectly D. Expand indefinitely

Q8: Critical temperature is the temperature:

A. Above which gas cannot be liquefied B. Below which gas is ideal C. At which gas behaves ideally D. At which gas condenses

Q9: Which property is NOT considered in ideal gas law?

A. Molecular volume B. Pressure C. Temperature D. Volume

Q10: Real gases behave ideally at:

A. High pressure, low temperature B. Low pressure, high temperature C. High pressure, high temperature D. Low pressure, low temperature

Q11: Compressibility factor (Z) of ideal gas is:

A. Greater than 1 B. Less than 1 C. Equal to 1 D. Depends on pressure

Q12: If Z < 1, the gas behavior indicates:

A. Positive deviation B. Negative deviation C. Ideal behavior D. No deviation

Q13: Which statement about ideal gases is true?

A. They have volume and attraction B. They have neither volume nor attraction C. They have volume but no attraction D. They have attraction but no volume

Q14: The Boyle temperature is the temperature at which:

A. Gas behaves ideally at all pressures B. Gas liquefies C. Gas condenses D. Gas deviates most

Q15: Deviations from ideal gas behavior increase with:

A. Increasing pressure B. Decreasing pressure C. Increasing temperature D. Increasing volume

Q16: What does the compressibility factor Z represent?

A. Deviation from ideal gas behavior B. Pressure of gas C. Volume of gas D. Temperature of gas

Q17: Which gas law is modified by Van der Waals equation?

A. Ideal gas law B. Boyle’s law C. Charles’s law D. Gay-Lussac’s law

Q18: When a gas is compressed, its behavior:

A. Approaches ideal gas B. Moves away from ideal gas C. Does not change D. Becomes liquid immediately

Q19: Real gases occupy:

A. No volume B. Less volume than ideal gas C. More volume than ideal gas D. Exact volume as ideal gas

Q20: The pressure correction term in Van der Waals equation is due to:

A. Intermolecular repulsion B. Intermolecular attraction C. Molecular volume D. Temperature