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Mothballs work on the principle of ________.
1. Evaporation
2. Liquefaction
3. Deposition
4. Sublimation

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Correct Answer - Option 4 : Sublimation

The correct answer is Sublimation.

  • Mothballs are small pellets of pungent substance stored among clothing to kill moths and discourage them from breeding in your belongings.
  • There are two different kinds of mothballs used to combat moths.
    • In one type, the main ingredient is naphthalene, and in the other the main ingredient is paradichlorobenzene.
  • Whether the mothballs you are using contain naphthalene or paradichlorobenzene, the mothballs will sublimate. Upon undergoing sublimation, these mothballs will go from a solid to a gas and release fumes. These fumes are toxic to moths and moth larvae and should kill them or deter them from the area. 

  • Sublimation
    • ​It is the transition of a substance directly from the solid to the gas state, without passing through the liquid state.
  • Deposition
    • It is the geological process in which sediments, soil, and rocks are added to a landform or landmass. Wind, ice, water, and gravity transport previously weathered surface material, which, at the loss of enough kinetic energy in the fluid, is deposited, building up layers of sediment.
  • Liquefaction
    • It is a phenomenon in which the strength and stiffness of soil are reduced by earthquake shaking or another rapid loading. Liquefaction and related phenomena have been responsible for tremendous amounts of damage in historical earthquakes around the world.
  • Evaporation
    • It is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other. 

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