Question

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

Answer 1

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Two precautions to be taken are:

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

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

Answer 2

Answer:

A student conducted an experiment to show CO₂ is released during respiration.

For obtaining correct observations, following precautions should be kept in mind:

1. Always use freshly prepared KOH solution and as KOH is corrosive so handle it carefully.

2. The experiment set up must be air-tight.

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