Waec Model Questions Vol1 2024 Geography Question 21
Practice objective / multiple choice question 21 from the 2024 Waec Model Questions Vol1 Geography examination.
A rock sample consists of 40% quartz, 30% feldspar, 20% mica and 10% other minerals by volume. During chemical weathering quartz remains unchanged, feldspar loses 25% of its volume, mica loses 40% of its volume and the other minerals disappear completely. What is the percentage of quartz in the remaining solid material after weathering? Express your answer to one decimal place.
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This is Waec Model Questions Vol1 2024 Geography Question 21. It is one of the objective questions from the 2024 Waec Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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