Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is

Calcium oxide

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Distilled water

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Potassium hydroxide solution

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Sodium carbonate.

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Solution

The correct option is C Potassium hydroxide solution

Like other alkali metals, potassium hydroxide combines with $C O_{2}$ as such:-
$2 K O H + C O_{2} \to K_{2} C O_{3} + H_{2} O$

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Carbon dioxide is necessary for photosynthesis. The chemical used to remove this gas most effectively from entering a control apparatus is

The correct option is C Potassium hydroxide solution Like other alkali metals, potassium hydroxide combines with CO2 as such:- 2KOH+CO2→K2CO3+H2O

The correct option is C Potassium hydroxide solution

Like other alkali metals, potassium hydroxide combines with $C O_{2}$ as such:-
$2 K O H + C O_{2} \to K_{2} C O_{3} + H_{2} O$