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Q.

In half leaf experiment, to maintain CO2-free conditions in the test tube where the upper half of the leaf is inserted, the chemical used to absorb CO2 is 

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a

Sodium hydroxide

b

Calcium chloride

c

Calcium hydroxide

d

Potassium hydroxide

answer is A.

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Detailed Solution

KOH absorbs CO2 and makes the air of the test tube free of CO2.

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