Gce Model Questions Vol1 2022 Geography Question 29
Practice objective / multiple choice question 29 from the 2022 Gce Model Questions Vol1 Geography examination.
A rock sample is composed of 60 % quartz (density \(2.65\ \text{g cm}^{-3}\)), 30 % feldspar (density \(2.55\ \text{g cm}^{-3}\)) and 10 % magnetite (density \(5.18\ \text{g cm}^{-3}\)) by mass. (a) Calculate the bulk density of the rock using a volume‑weighted average. (b) The measured bulk density of the rock is \(2.78\ \text{g cm}^{-3}\). Assuming the excess density is due to an additional heavy mineral of density \(7.8\ \text{g cm}^{-3}\) uniformly mixed in, estimate the percentage by volume of this heavy mineral present in the rock.
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About This Question
This is Gce Model Questions Vol1 2022 Geography Question 29. It is one of the objective questions from the 2022 Gce Model Questions Vol1 Geography examination.
Difficulty level: Medium .
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