(i)To remove any solid/dust/purify air
(ii)Calcium hydroxide change to a white precipitate;Carbon (iv) oxide produced by the
cockroaches reacted with calcium hydroxide to produce a white precipitate.
(iii)All oxygen was used up by the cockroaches at flask M ,for respiration;producing carbon (Iv) oxide as a metabolic waste product.
isaacmuthini answered the question on November 16, 2017 at 09:41
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