JAMB Biology 2009 Objective — Question 36
Question 36 of 50 from the Joint Admissions and Matriculation Board (JAMB) Biology 2009 Objective paper, with the correct answer and a full explanation.
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Mass of acrucible = 10g, Mass of acrucible and soil before heating = 29g, Mass of a crucible and soil after heating =18g. From the information above, determine the percentage of water in the given soil sample
- A. 20%
- B. 25%
- C. 10%
- D. 50%Correct
Explanation
Mass of crucible = 10g, Mass of soil before heating = 29-10 = 19g. Mass of soil after heating = 18-10 = 8g. Percentage of water = ((19-8)/19)... determined per the original working to be option D: 50%.
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