Question

what precaution should be taken to study the libration of carbon dioxide gas during aerobic respiration?

Answer 1

the precaution that should be taken to study the liberation of Co2 as  (carbon dioxide gas )  during aerobic respiration ;-
1. keep the flask air tight
2. use freshly prepared KOH solution
3. fix the shorter end of glass tube in such a way that it does not touch the seed (seed which is used in experiment)
4.germination seed should be kept moist.
5. test tube containing KOH should be hung carefully.

Answer 2

keep the flask a tight
use freshly prepared KOH solution