CBSE  /  Class 11  /  Chemistry  /  States of Matter

  • 1. 
    The vapour pressure of water at 300 K in a closed container is 0. 4 atm. If the volume of container is doubled, its vapour pressure at 300 K will be

  • 0. 8 atm
  • 0. 2 atm
  • 0. 4 atm
  • 0. 6 atm

  • 2. 
    Name the liquid with higher vapour pressure in the following pairs:

  • Alcohol, Water, Petrol
  • Petrol, Water, Alcohol
  • Alcohol, Petrol, Water
  • None of these

  • 3. 
    The rate of diffusion methane is twice that of X. The molecular mass of X is

  • 64. 0
  • 32. 0
  • 40
  • 80

  • 4. 
    The state of matter that shows the uniformity of behavior :

  • Solid Liquid
  • Liquid
  • Gas
  • None of the Above

  • 5. 
    A gas deviates from ideal behavior at a high pressure because its molecules:

  • Attract one another
  • Show the Tyndall Effect
  • Have kinetic energy
  • Are bound by covalent bonds

  • 6. 
    The value of universal gas constant R depends on

  • Temperature of Gas
  • Volume of Gas
  • Number of Moles of Gas
  • Units of Volume,Temperature and Pressure

  • 7. 
    The critical volumes of four gases A, B, C, D are respectively 0. 025 L, 0. 312 L, 0. 245 L, 0. 432 L, the gas with highest value of van der Wall constant b is

  • A
  • B
  • C
  • D

  • 8. 
    Which of the following statement is wrong for gases?

  • Gases do not have definite shape and volume
  • Volume of the gas is equal to the volume of the container confining the gas
  • Confined gas exert uniform pressure on the wall of the container in all directions
  • Mass of the gas cannot be determined by weighing a container in which it is contained

  • 9. 
    In van der Waal equation of state of gas laws, the constant b is a measure of

  • Intermolecular collisions per unit volume
  • Intermolecular attraction
  • Volume occupied by the molecules
  • Intermolecular repulsions

  • 10. 
    The volume of 2. 8 g of carbon monoxide at 27°C and 0. 0821 atm is

  • 30 L
  • 3 L
  • 0. 3 L
  • 1. 5 L
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