10th Class Science Solved Paper - Science-2017 Outside Delhi Set-I

  • question_answer
    Mention the essential material (chemicals) to prepare soap in the laboratory. Describe in brief the test of determining the nature (acidic/alkaline) of the reaction mixture of saponification reaction.

    Answer:

    The essential chemicals required to prepare soap in the laboratory are: oil and sodium hydroxide solution. In order to determine the nature of the reaction mixture of saponification reaction, we dip red litmus paper into it which will turn blue after a while indicating that it is a basic mixture.


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