Waec Model Questions Vol1 2023 Geography Question 7

Practice objective / multiple choice question 7 from the 2023 Waec Model Questions Vol1 Geography examination.

Waec Model Questions Vol1 2023 Geography Objective / Multiple Choice Medium Difficulty
Question 7 WAEC_MODEL_QUESTIONS_VOL1 • 2023 • GEOGRAPHY • objective

In a region the total rock volume is 500 km³. Initially 40% of the volume is igneous, 35% sedimentary and the remainder metamorphic. Over a geological period, 10% of the igneous rock weathers to become new sedimentary rock, while 5% of the original sedimentary rock metamorphoses. After these changes, what are the percentages (to one decimal place) of igneous, sedimentary and metamorphic rocks in the region?

Answer Options

A. Igneous 35.0%, Sedimentary 37.0%, Metamorphic 28.0%
B. Igneous 36.0%, Sedimentary 38.0%, Metamorphic 26.0%
Correct Answer C. Igneous 36.0%, Sedimentary 37.3%, Metamorphic 26.8%
D. Igneous 38.0%, Sedimentary 35.5%, Metamorphic 26.5%
Correct Answer
C
Correct Option:
Igneous 36.0%, Sedimentary 37.3%, Metamorphic 26.8%

About This Question

This is Waec Model Questions Vol1 2023 Geography Question 7. It is one of the objective questions from the 2023 Waec Model Questions Vol1 Geography examination.

Difficulty level: Medium .

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