Q. What are the properties of subatomic particles of atom? Top Answer Solution:The properties of subatomic particles of atom. Particle Symbol Location Charge Mass (kg) Discover Proton p+ Inside the nucleus +1 9.1 x 10-31 J.J. Thomson Electron e– Outside…
Q. What is floating? Top Answer Solution:Floating – An object will float on a liquid if its density is less than the density of the liquid. When an object is placed over a liquid whose density is more than the…
Q. What is sinking? Top Answer Solution:Sinking – An object will sink in a liquid, if its density is more than the density of the liquid. When an object is placed over a liquid whose density is less than the…
Q. What is Sublimation? Top Answer Solution:The process by which a solid directly changes into a gas on heating is called sublimation. Again, vapours of these substances on cooling, directly solidify, Camphor, naphthalene, iodine and ammonium chloride are examples of…
Q. What is Evaporation? Top Answer Solution:The process of conversion of a liquid into vapour at the temperature below its boiling point is called evaporation. Evaporation is a slow process and takes place only at the free surface of a…
Q. What is Freezing or Solidification? Top Answer Solution:The process in which a substance in liquid state changes into solid state at a fixed temperature is called freezing or solidification. The fixed temperature at which freezing of a liquid takes…
Q. What is Condensation or Liquefaction? Top Answer Solution:The process in which a substance in the vapour (gaseous) state changes into liquid state at a fixed temperature is called condensation or liquefaction. The fixed temperature at which condensation takes place…
Q. What is Vaporization or Boiling Top Answer Solution:The process in which a substance in the liquid state changes to a vapour (gaseous) state at a fixed temperature is called vaporisation or boiling. The fixed temperature at which a liquid…
Q. What is Melting or Fusion? Top Answer Solution:The process in which a substance in solid state changes into liquid state at afixed temperature is called melting or fusion. The fixed temperature at which asolid melts into a liquid are…
