A student contacted an experiment to show CO2 is released during respiration. List 2 precautions that he/she must take for obtaining correct observations.
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1take freshly prepared solution of potassium hydroxide 2note the observation correctly and mark the level of water displaced by the carbon dioxide carefully
kunjju:
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1) It should be ensured that the experiment is air tight that is there is no supply of oxygen.
2)the germinating seeds should be fresh
3) the tubes which are connected should be properly in contact with the solution and with each other
2)the germinating seeds should be fresh
3) the tubes which are connected should be properly in contact with the solution and with each other
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