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Biology Question on Photosynthesis in higher plants

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

A

calcium oxide

B

distilled water

C

potassium hydroxide solution

D

sodium carbonate

Answer

potassium hydroxide solution

Explanation

Solution

Like other alkali metals, potassium hydroxide combines with CO2 as such :- \quad\quad\quad 2KOH+CO2−>K2CO3+H2O {2KOH +CO2 -> K2CO3 +H2O}