Free Test Ideal gas equation – NEET

Q1: What is the ideal gas equation?

A. PV=nRT B. P=nRT/V C. PV=nR/T D. P=n/VRT

Q2: Which unit is used for gas constant R in SI?

A. J/K B. J/mol·K C. atm·L/mol D. K·mol/J

Q3: At constant pressure, volume is directly proportional to?

A. Temperature B. Pressure C. Density D. Molar mass

Q4: Which law is derived from PV=nRT at constant T?

A. Boyle’s law B. Charles’ law C. Avogadro’s law D. Dalton’s law

Q5: What does R represent in PV=nRT?

A. Pressure B. Volume C. Gas constant D. Temperature

Q6: What is the value of R in cal/mol·K?

A. 2 B. 8.314 C. 0.0821 D. 1.987

Q7: Which of the following quantities remains constant in an isothermal process?

A. Temperature B. Pressure C. Volume D. Entropy

Q8: In PV = nRT, if P is in atm and V in liters, what is R?

A. 0.0821 B. 8.314 C. 1.987 D. 273

Q9: At STP, 1 mole of gas occupies?

A. 22.4 L B. 1 L C. 273 L D. 0.0821 L

Q10: Which condition violates ideal gas behavior?

A. High pressure B. Low pressure C. High temperature D. Low density

Q11: For which type of gas is PV=nRT exactly applicable?

A. Ideal gas B. Real gas C. Monatomic gas D. None

Q12: Which is not a valid assumption for ideal gas?

A. No intermolecular force B. Elastic collisions C. Point masses D. Attractive forces exist

Q13: When volume is doubled and pressure halved, temperature becomes?

A. Same B. Doubled C. Halved D. Four times

Q14: Dimension of gas constant R?

A. ML²T⁻²K⁻¹mol⁻¹ B. MLT⁻¹ C. MLT⁻² D. M⁻¹L³T²

Q15: Which gas behaves most ideally?

A. Helium B. Oxygen C. Water vapor D. Ammonia

Q16: At constant temperature, doubling pressure will?

A. Halve volume B. Double volume C. No change in volume D. Double temperature

Q17: Which of the following is not state variable?

A. Pressure B. Volume C. Temperature D. Heat

Q18: Ideal gas equation fails at?

A. High pressure B. Low temperature C. Near liquefaction D. All of these

Q19: What is the unit of n in PV=nRT?

A. Molar mass B. Number of particles C. Number of moles D. Molecule count

Q20: Which law explains n ∝ V at constant T and P?

A. Avogadro’s law B. Boyle’s law C. Charles’ law D. Dalton’s law

Quiz for Ideal gas equation