Why KOH solution is kept in the test-tube inside the air-tight conical flask
Why KOH solution is kept in the test-tube inside the air-tight conical flask while doing the experiment of respiration of seeds
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KOH solution kept in the test-tube inside air-tight conical flask absorbs the evolved carbon dioxide released by germinating seeds thereby creating a partial vacuum in the conical flask. So, equal volume of water rises up in the tube. This indicates that the germinating seeds are actively respiring and evolving carbon dioxide gas during the process of respiration.
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