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The outer surface of a beaker containing ice cubes becomes wet in short while - Give scientific reason.

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Question  The outer surface of a beaker containing ice cubes becomes wet in short while. Answer  When ice cubes are placed in a beaker, ice starts melting.  The heat required for melting is absorbed from the surrounding air and also from the beaker to some extent.  Hence, the temperature of the air and beaker falls.  The capacity of air to hold water vapour depends upon the temperature of the air, and this capacity decreases as the temperature decreases.  At a certain low temperature, the surrounding air becomes saturated with water vapour present in it.  As the temperature falls further, the air is unable to hold all the water vapour.  Hence, the extra water vapour starts condensing on the cold outer surface of the beaker in the form of minute drops.  Therefore, The outer surface of the beaker containing ice cubes becomes wet in a short while.
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definition related to chemical reaction

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definition related to chemical reaction. 


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*A variety of oxidation are used to bring about a controlled oxidation. 

*A redox reactions takes place during cellular respiration. Here the molecule of the enzyme called cytochrome C oxidase helps the transport of electron to bring about this reaction.

*When the positive charge or an atom or an ion increases or the negative charge on them decreases it is called oxidation, and when the positive charge decreases or the negative charge increases it is called reduction

*The chemical reaction in which reactants gain hydrogen are called Reduction

*The reaction in which a reactant loses oxygen to form the product is also called reduction reaction.

*The substance that brings about reduction is called a reductant, or a reducing agent.

*Due to various components of atmosphere, oxidation of metals takes place, consequently resulting in their damage. This is called 'corrosion'.

*When we use old, left over cooking oil for making food stuff, it is found to have foul odor called Rancidity.

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