BIOLOGY

JAMB 2008 - Question 37

Biology 2008 JAMB Past Questions - Question 37: In an experiment to determine the percentage of air in ) soil sample, the following readings were recorded: Volume of water in a measuring cylinder = 500cm3 Volume of soil added to water = 350cm3 Volume of water and soil after stirring = 800cm3 The percentage of air in the soil sample is

Choose the most appropriate option for the gap .
In an experiment to determine the percentage of air in ) soil sample, the following readings were recorded: Volume of water in a measuring cylinder = 500cm3 Volume of soil added to water = 350cm3 Volume of water and soil after stirring = 800cm3 The percentage of air in the soil sample is
A:
B:
C:
D:
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Correct Answer

C

Explanation

Volumeof water and volume of soil 500 + 300 = 850cm3Volume of water and soil after stirring 800cm3 Volumeof displaced air in the soil 50cm3% of soil air = Volume of air x 100 % Volume of soil 1 50 x 100% =14.28%350 1 ANS C

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