Characteristics of chemical Reactions


 
 
Concept Explanation
 

Characteristics of Chemical Reactions

The important characteristics of chemical reactions are:

  • Evolution of a gas : When sodium reacts with water, bubbles of hydrogen gas is seen .
  • Formation of a precipitate.: When a silver nitrate solution reacts with sodium chloride solution it gives precipitate of silver chloride and sodium nitrate solution .
  • Change in colour.: When iron nail is dipped in blue colored copper sulphate solution ,the blue color change to green .
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    Sample Questions
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    Question : 1

    _______________ is a characteristics of chemical reaction .

    Right Option : A
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    Question : 2

    Which of the following are the observations of chemical reaction .

    Right Option : D
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    Question : 3

    When iron nail is dipped in blue colored copper sulphate solution, the blue color changes to green is an example of ____________________.

    Right Option : A
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