What chemical substance is placed in a sealed flask to absorb carbon dioxide in an experiment proving CO2 is needed for...

Type: MCQ • Marks: 1

What chemical substance is placed in a sealed flask to absorb carbon dioxide in an experiment proving CO2 is needed for photosynthesis?

A. Calcium carbonate

B. Sodium chloride

C. Potassium hydroxide (KOH)

D. Glucose solution

Explanation

Potassium hydroxide (KOH) absorbs atmospheric carbon dioxide inside the bell jar/flask.

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