The mathematical expression that describes Boyle's law is

  • PV = constant
  • V * constant = P
  • P * constant = V
  • V ⁄ P = constant

For a certain reaction PV = 2 dm3 atm and volume is 4 dm3 then the corresponding pressure is

  • 1 atm
  • 4 atm
  • 0.5 atm
  • 2 atm

The molecules of liquid which escape first have

  • highest kinetic energy
  • lowest kinetic energy
  • moderate kinetic energy
  • infinite kinetic energy

The process in which the solid changes directly into vapors without changing in the liquid state is called

  • condensation
  • evaporation
  • boiling
  • sublimation

Conversion of a liquid to a gas at all temperatures is called

  • sublimation
  • evaporation
  • condensation
  • boiling

The temperature at which the solid starts melting is called

  • boiling point
  • freezing point
  • melting point
  • sublimating point

The pressure that vapors apply on the surface of the liquid at equilibrium is called

  • torr
  • vapor pressure
  • liquid pressure
  • condensation

On increasing the temperature of amorphous solid they

  • melt at specific temperature
  • soften gradually
  • break at specific temperature
  • boil at specific temperature

At constant pressure the average kinetic energy of gas molecules increases 2 times if

  • temperature is increased by 2 times
  • temperature is halved
  • no change in temperature
  • temperature remains constant

The average kinetic energy of gas molecules is directly proportional to

  • T2
  • √T
  • T
  • 2T
0 h : 0 m : 1 s

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