Q.9. Given below is an experiment related with breathing. Observe the figure and answer the following questions
(i) What is the aim of the experiment?
(ii) What happens to the lime water when air is blown into the test tube?
(iii) Why does the change mentioned by you in (ii) takes place?
(iv) What will be the control experiment?
given out during expiration.
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The aim of an experiment is the objective. In other words, it says what can be learned from the experiment. "To see how light is affected by lenses and plates of glass of various thickness." The aim should be brief - one or two lines
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