Question

two precautions to be taken for the experiment to show that co2is release during respiration

Answer 1

1. Potassium Sulphate that is taken in the test tube does not fall on the germinating seeds and the moist cotton below.
2. Also, the cork is fit tightly so that there is no loss of the carbondioxide produced.

Answer 2

1) KOH solution used must be freshly prepared .
2) The apparatus used must be air-tight .
3) KOH should be handled carefully , as it is corrosive in nature .