Why do we keep a watch glam with KOH in the bell jar for experiment of photosynthesis
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KOH solution is kept in the bell jar during the experiment to remove all the carbon dioxide from the bell jar. Name the gas which is evolved from the water plant like Hydrilla during the experiment.
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Place a watch-glass containing potassium hydroxide by the side of one of the plants. The potassium hydroxide is used to absorb carbon dioxide. Cover both plants with separate bell-jars. Use vaseline to seal the bottom of the jars to the glass plates so that the set-up is air-tight
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