Question

What happens to the $C{O}_2$ given out by germinating seeds while performing the experiment?

• A. It is absorbed by KOH.
• B. It is absorbed by mercury
• C. It is absorbed by Ca(OH)${}_2$
• D. Both A and B

Answer 1

The correct option is A It is absorbed by KOH.

Production of carbon dioxide gas during respiration can be studied experimentally. During germination, the seeds give out carbon dioxide as a byproduct of respiration. This carbon dioxide is then absorbed by the KOH solution. This creates vacuum in the conical flask. The air present in the delivery tube enters the conical flask. This pulls the water further up in the delivery tube. This results in the increase in the water level in the delivery tube.

Thus, the correct answer is 'It is absorbed by KOH.'