The following experimental set-ups were kept in the laboratory to show that ‘CO 2 is given out during respiration’. After 2 hours, in which the delivery tube does the water rise?

Question

Philoid · Accepted Answer

In set up A, the water rise as the rubber cork perfectly seals the conical flask hence creating the vacuum but in set up B due to cotton plug as cotton cannot perfectly seal the flask, and air can pass through as a result water does not rise up as water needs perfect vacuum to rise up.

The following experimental set-ups were kept in the laboratory to show that ‘CO2 is given out during respiration’.After 2 hours, in which the delivery tube does the water rise?

The following experimental set-ups were kept in the laboratory to show that ‘CO₂ is given out during respiration’.

After 2 hours, in which the delivery tube does the water rise?