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10th Class Science Sample Paper Sample Paper - 1 Term - 1

  • question_answer
    In the experimental set up to show that carbon dioxide (CO2) is given out during respiration, why potassium hydroxide (KOH) is kept in the small test tube inside the flask?  

    Answer:

    Potassium hydroxide (KOH) is kept in the small test tube inside the flask because it absorbs  and thereby creates partial vacuum inside the flask.  


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