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10th Class Science Chemical Reactions and Equations Question Bank 10th CBSE Science Chemical Reactions and Equations

  • question_answer
      A solution of a substance 'X' is used for whitewashing. (i) Name the substance 'X' and write its formula. (ii) Write the reaction of the substance 'X' named in (i) above with water.         [NCERT]

    Answer:

                      (i) The substance 'X' used for whitewashing is quicklime (calcium oxide). Its formula is CaO. (ii) When quicklime is mixed with water, the following reaction takes place:                  


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