IT JEE Chemistry Practice Paper Part 5: States of Matter PYQs

Q1. Which of the following is not an assumption of the kinetic theory of gases?

(a) Gas molecules are in constant random motion
(b) Intermolecular forces are negligible
(c) Volume of gas molecules is negligible compared to container
(d) All collisions are inelastic

Q2. The compressibility factor (Z) is defined as:

(a) Z = PV/RT
(b) Z = RT/PV
(c) Z = nRT/PV
(d) Z = V/nRT

Q3. At Boyle’s temperature, a real gas shows:

(a) Maximum deviation from ideal behavior
(b) No deviation from ideal behavior
(c) Liquefaction
(d) Negative pressure

Q4. Which law states that at constant temperature, pressure of a fixed mass of gas is inversely proportional to its volume?

(a) Charles’ Law
(b) Boyle’s Law
(c) Avogadro’s Law
(d) Gay-Lussac’s Law

Q5. Critical temperature of a gas is the temperature:

(a) Above which gas cannot be liquefied
(b) At which gas shows ideal behavior
(c) At which pressure is zero
(d) Below which volume is negligible

Q6. Which gas law forms the basis of absolute temperature scale?

(a) Avogadro’s Law
(b) Charles’ Law
(c) Boyle’s Law
(d) Dalton’s Law

Q7. Real gases approach ideal behavior at:

(a) Low temperature and high pressure
(b) High temperature and low pressure
(c) Low temperature and low pressure
(d) High temperature and high pressure

Q8. Which of the following plots is a straight line for an ideal gas at constant temperature?

(a) P vs V
(b) V vs T
(c) P vs 1/V
(d) PV vs P

Q9. Van der Waals’ constant ‘a’ is a measure of:

(a) Size of molecules
(b) Pressure correction
(c) Intermolecular attraction
(d) Molecular mass

Q10. Diffusion of gases is governed by:

(a) Dalton’s Law
(b) Graham’s Law
(c) Boyle’s Law
(d) Avogadro’s Law