Question

A student conducted an experiment to show CO2 is released during respiration.
List two precautions that he/she must take for obtaining correct observations.

Answer 1

Hey !!

Precautions to be taken while performing experiment to show CO2 is released during respiration -

1.)The conical flask in which the germinating seeds are kept should be airtight

2.)Freshly prepared KOH solution should be used.

3.) The shorter end of the glass tube should be kept in such a way that it doesn't touches the seeds.

Hope it helps you :)

Answer 2

Two precautions to be taken are:

(i) Germinating seeds (living) should be used.

(ii) The experiment set up must be air-tight.