NEET Chemistry States Of Matter Online Test Set A

1. The compressibility factor ‰Û÷Z‰Ûª for the gas is given by

2. For a real gas, Z shows

3. Which one is correct relation for 1 mole of real gases?

4. van der Waal found that two assumptions made by kinetic theory of gases were wrong, one of them is that gas molecules are

5. van der Waal‰Ûªs constant ‰Û÷a‰Ûª has the dimensions of

6. In van der Waal‰Ûªs equation of state for a non-ideal gas, the term that accounts for intermolecular forces is

7. When there can be more deviation in the behaviour of a gas from the ideal gas equation PV = nRT

8. Pressure exerted by a perfect gas is equal to

9. 100 mL of O₂ gas diffuses in 10 s. 100 mL of gas 'X' diffuses in 't' sec. Gas 'X' and time 't' can be

10. The rates of diffusion of gases A and B of molecular weights 100 and 81 respectively are in the ratio of

11. A bottle of dry ammonia and a bottle of dry hydrogen chloride connected through a long tube are opened simultaneously at both ends, the white ammonium chloride ring first formed will be

12. Which of the following relation is correct for an ideal gas?

13. The density of neon will be highest at

14. Two non-reactive gases A and B are present in a container with partial pressures 200 and 180 mm of Hg. When a third non-reactive gas C is added then total pressure becomes 1 atm then mole fraction of C will be

15. The two bulbs of volume 5 litre and 10 litre containing an ideal gas at 9 atm and 6 atm respectively are connected. What is the final pressure in the two bulbs if the temperature remains constant?

16. Which mixture of gases at room temperature does not obey Dalton's law of partial pressure?

17. 2 g of gas A introduced in a evacuated flask at 25å¡C. The pressure of the gas is 1 atm. Now 3 g of another gas B is introduced in the same flask so total pressure becomes 1.5 atm. The ratio of molecular mass of A and B is

18. What percent of a sample of nitrogen must be allowed to escape if its temperature, pressure and volume are to be changed from 220å¡C, 3 atm and 1.65 litre to 110å¡C, 0.7 atm and 1.00 litre respectively?

19. A vessel has 6 g of oxygen at a pressure P and temperature 400 K. A small hole is made in it so that O_2åÊleaks out. How much O_2åÊleaks out if the pressure is P/2 and temperature 300 K?

20. If the density of a certain gas at 30å¡C and 768 torr is 1.35 kg/m3 its density at STP would be

21. A sample of gas at 1.2 atm and 27å¡C is heated at constant pressure to 57å¡C. Its final volume is found to be 4.75 litres. What was its original volume?

22. ‰ÛÏOne gram molecules of a gas at N.T.P. occupies 22.4 litres‰Û_. This fact was derived from

23. When a gas filled in a closed vessel is heated through 1å¡C, its pressure is increased by 0.4%. The initial temperature of the gas was

24. To what temperature must a neon gas sample be heated to double its pressure if the initial volume of gas at 75å¡C is decreased by 15.0%?

25. I, II, III are three isotherms respectively at T₁, T₂, T_3åÊ. Temperature will be in order

26. Which curve shows Charles‰Ûª law?

27. When the temperature is raised through 1å¡C the volume is increased by 1/273 th times of the original volume. This is

28. How much should the pressure be increased in order to decrease the volume of a gas by 5% at a constant temperature?

29. A gas at a pressure of 5 atm is heated from 0å¡ to 546å¡C and simultaneously compressed to 1/3 rd of its original volume. Hence final pressure is

30. A sample of gas occupies 10 L under a pressure of 1 atm. What will be its volume if the pressure is increased to 2 atm? Assuming that temperature of the gas sample does not change