Neco 2019 Geography Question 1
Practice objective / multiple choice question 1 from the 2019 Neco Geography examination.
An original shale contains \(70\%\) clay minerals, \(20\%\) quartz and \(10\%\) organic matter by weight. During regional metamorphism all organic matter is lost and \(5\%\) of the remaining mass is lost uniformly due to devolatilisation. The remaining clay minerals are completely transformed into mica while quartz remains unchanged. What is the weight percent of mica in the resulting metamorphic rock (to one decimal place)?
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About This Question
This is Neco 2019 Geography Question 1. It is one of the objective questions from the 2019 Neco Geography examination.
Difficulty level: Medium .
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