Question

why is the other end of the tube dipped in a breaker of coloured​

Answer 1

Answer:

Before fixing the cork, hang a test tube containing KOH solution inside the conical flask with the help of a thread. Take coloured water in the beaker and keep the longer end of the glass tube dipped inside it. ... Actually, the germinating seeds respire and produce CO2, which is absorbed by KOH solution.