cameroon gce advance level June 2021 geology paper 1

cameroon gce advance level June 2021 geology paper 1

cameroon gce advance level June 2021 geology paper 1

Why is granite not commonly used as an 5.
aggregate for road construction?
A It has a high compressive strength
B It is coarse grained
C It is expensive to
quarry
D It has a low compressive strength
Use
the diagram below (figure l )vvhich shows
the approximate mineral composition of
igneous rocks
to answer questions 2, 3 and 4.

formed?
A Shallow marine
B Deep marine
C Desert
D Lagoonal
6
.
From the jumbled list of rocks below, select
themost likely sequence to show the
formation of a
gneiss from a granite:
A
GraniteSlateGneiss
B GraniteGravel SlateSchist
Gneiss
C GraniteGravelClay Gneiss
D Granite ClaySlateSchist Gneiss
7
.
Figure 1
Name the two plagioclase minerals that
would
occur in A and in C respectively
A Anorthite and Albite
B Albite and Labradorite
C
Oligoclase and Andesite
D Anorthite and Andesite
2.
Use the information presented below to
answer questions 8 and 9.
>
Specimen K reacts with dilute HCI and forms
cleavage
rhombs.
> Specimen L is pink in colour, has a hardness
of 6 and cleaves in 2 directions at 90°
Identify specimens K and L respectively:
A
Limestone and Orthoclase
B Calcite and Orthoclase
C Marble and Orthoclase
D Calcite and Albite
Which mineral has the lowest density?
A Quartz
B Orthoclase
C Biotite
D Hornblende
3.
8.
The most easily weathered mineral would be:
A Olivine
B Augite
C Hornblende
D Plagioclase
4
. 9. What type of twinning is exhibited by specimen
L?
A Repeated
twinning
B Carlsbad
twinning
C Butterfly twinning
Figure 2 is a
field sketch which a student did not have D Geniculate twinning
time to label completely. U

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