9th Class Social Science Is Matter Around Us Pure Question Bank 9th CBSE Social Science Is Matter Around Us Pure

  • question_answer
      A student mixes white of an egg with water and stirs it well. After sometime what did he observe?

    Answer:

                      The process is called corrosion and it is a chemical change because rust is a chemical compound (hydrated iron    oxide, ) totally different from element iron. The reaction is         (1)


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