JEE Chemistry Online Test States Of Matter Set D

1. The kinetic energy of molecules in gaseous state is

2. A liquid can exist only

3. Which of the following statement is incorrect ?

4. At 1 atm pressure boiling temperature is called _____X___. If pressure is 1 bar then the boiling point is called _____Y____ of the liquid.

5. Choose the correct statement based on the following isotherms of carbon dioxide at various temperature. (i) We can move from point A to F vertically by increasing the temperature.
(ii) We can reach the point G by compressing the gas at constant temperature.
(iii) We can move down from G towards D by increasing the temperature.
(iv) As soon as we cross the point D on the critical isotherm we get liquid

6. Following table represents critical temperature of some gases. Arrange these gases in their increasing order of liquifaction

7. Select the one that when used would be considered as best condition for liquification of a gas

8. Above Boyle point, real gases show ______X______ from ideality and Z values are _______Y_______ than one.

9.

10. An ideal gas can’t be liquefied because

11. A gas is said to behave like an ideal gas when the relation PV/T = constant. When do you expect a real gas to behave like an ideal gas ?

12. The gas with the highest critical temperature is

13. The compressibility factor for a real gas at high pressure is

14. At low pressure the van der Waal’s equation is reduced to

15. The van der Waal’s constant ‘a’ for four gases P, Q, R and S are 4.17, 3.59, 6.71 and 3.8 atm L2 mol–2 respectively. Therefore, the ascending order of their liquefaction is

16. The units of constant a in van der Waal’s equation is

17. A gas described by van der Waal’s equation (i) behaves similar to an ideal gas in the limit of large molar volume
(ii) behaves similar to an ideal gas in the limit of large pressure
(iii) is characterised by van der Waal's coefficients that are dependent on the identity of the gas but are independent of the temperature
(iv) has the pressure that is lower than the pressure exerted by the same gas behaving ideally

18. The values of van der Waal’s constant ‘a’ for the gases O₂, N₂, NH₃ and CH₄ are 1.360, 1.390, 4.170 and 2.253 L² atm mol^–2 respectively. The gas which can most easily be liquified is

19. In van der Waal’s equation of state for a non-ideal gas, the term that accounts for intermolecular forces is

20. In van der Waal’s equation of state of the gas law, theconstant ‘b’ is a measure of

21. When is deviation more in the behaviour of a gas from the ideal gas equation PV = nRT ?

22. Which one of the following is the wrong assumption of kinetic theory of gases ?

23. Kinetic theory of gases proves

24. Which of the following assumption of kinetic theory if hold good than the pressure vs volume graph of experimental data (real gas) and that of theoretically calculated from Boyle's law (ideal gas) should coincide ? (i) There is no force of attraction between the moleculesof a gas.
(ii) Volume of the molecules of a gas is negligibly small in comparison to the space occupied by the gas.

25. Which of the following assumption of kinetic molecular theory states that gases do not have fixed shape ?

26. If there were loss of kinetic energy, the motion of gas molecules will _____A _______ and gas will ____B______.

27. Gases consist of large number of identical particles (atoms or molecules) that are so small and so far apart on the average that the actual volume of the molecules is negligible in comparison to the empty space between them. Above given statement explain which property of gases ?

28. According to the kinetic theory of gases, in an ideal gas, between two successive collisions a gas molecule travels

29. Ideal gas equation is the combination of
I. Boyle's law
II. Charles's law
III. Avogadro law
IV. Dalton's law of partial pressure
Choose the correct option.

30. The total pressure of a mixture of two gases is