On cooling gas is changed in to liquid by the process of

  • condensation
  • diffusion
  • osmosis
  • evaporation

To explain and understand natural phenomenon, there is given a

  • theory
  • formula
  • model
  • structure

"Atomos" is a Greek word which means

  • small
  • indivisible
  • invisible
  • large

A fixed temperature on which liquid changes into gas is called its

  • melting point
  • boiling point
  • freezing point
  • evaporation

The particles of the solid

  • spin
  • vibrate
  • move along
  • both a and b

When solid is heated its particles begin to vibrate fast by gaining

  • energy
  • volume
  • mass
  • force

The haphazard movement of particles suspended in a liquid or gas due to the consequence of ongoing bombardment by molecules of a medium is

  • Brownian motion
  • Albert motion
  • Aristotle motion
  • Dalton motion

The hypothesis that all matters are made up of tiny discrete particles and too small to be seen with a naked eye was given by

  • Democritus
  • Aristotle
  • Robert brown
  • Albert Einstein

The movement of particles from an area of higher concentration to an area of lower concentration is called

  • osmosis
  • diffusion
  • Brownian motion
  • parallel motion

Who suggested that atomos were eternal and could not be destroyed.

  • Democritus
  • Aristotle
  • Robert brown
  • Albert Einstein

The density of a substance is the total mass of a unit. It is called

  • weight
  • volume
  • gravity
  • force

An advance microscope which allows us to see tiny discreet articles in matter is called

  • simple microscope
  • compound microscope
  • electron microscope
  • scanning tunneling microscope
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