GL101 Exam Preparation Newest 2026-2027
Actual Exam With Complete Questions And
Correct Detailed Answers (Verified Answers)
|Already Graded A+
In which type of chemical bonding are electrons shared between
adjacent atoms?
A) ionic
B) subatomic
C) covalent
D) isotopic - ANSWER-C
________ is the external expression of orderly internal arrangement of
atoms in a mineral crystal.
A) Lustre
B) Streak
C) Habit
D) Colour - ANSWER-C
Which of the following describes the light reflecting characteristics of a
mineral?
pg. 1
,A) lustre
B) streak
C) virtual absorption
D) fluorescence - ANSWER-A
Which minerals that make up the Mohs scale are softer than your
fingernail?
A) beryl, garnet, tourmaline
B) calcite, fluorite, apatite
C) feldspar, quartz, topaz, corundum, diamond
D) gypsum and talc - ANSWER-D
Which minerals that make up the Mohs scale are softer than a glass plate
but harder than your fingernail?
A) beryl, garnet, tourmaline
B) calcite, fluorite, apatite
C) feldspar, quartz, topaz, corundum, diamond
D) gypsum and talc - ANSWER-B
Which of the following will react readily with acids such as
hydrochloric?
A) calcite
B) quartz
pg. 2
,C) diamond
D) talc - ANSWER-A
All silicate minerals contain which two elements?
A) iron, silicon
B) silicon, sodium
C) oxygen, carbon
D) silicon, oxygen - ANSWER-D
All ferromagnesian minerals contain which two elements?
A) calcium, sodium
B) iron, magnesium
C) iron, potassium
D) chlorine, silicon - ANSWER-B
Which mineral is composed of silicon dioxide (SiO2)?
A) calcite
B) diamond
C) olivine
D) quartz - ANSWER-D
Why doesn't quartz have any cleavages, only fractures?
pg. 3
, A) All oxygens are shared between strongly bonded silicons in a 3-D
framework.
B) All of the metallic cations form strong webs between the silicate
chains.
C) It is made of pure silicon which is very strong.
D) It has strong helical chains in three perpendicular directions. -
ANSWER-A
Silicate igneous rocks make up the ________.
A) bulk of volcanic mountains but not much else on Earth
B) bulk of the Earth's crust and mantle
C) densest rocks and are mainly found in the core
D) majority of shallow rocks covering the continents but everything
deeper is sedimentary and metamorphic - ANSWER-B
Three processes contribute to the formation of every igneous rock:
________.
A) assimilation, crystallization, and dyke injection
B) extrusion, intrusion, and consolidation
C) partial melting, buoyant rise, and crystallization
D) volcanism, plutonism, and magmatic differentiation - ANSWER-C
Plutonic rocks are emplaced at depth yet they can be seen at the Earth's
surface due mainly to
pg. 4
Actual Exam With Complete Questions And
Correct Detailed Answers (Verified Answers)
|Already Graded A+
In which type of chemical bonding are electrons shared between
adjacent atoms?
A) ionic
B) subatomic
C) covalent
D) isotopic - ANSWER-C
________ is the external expression of orderly internal arrangement of
atoms in a mineral crystal.
A) Lustre
B) Streak
C) Habit
D) Colour - ANSWER-C
Which of the following describes the light reflecting characteristics of a
mineral?
pg. 1
,A) lustre
B) streak
C) virtual absorption
D) fluorescence - ANSWER-A
Which minerals that make up the Mohs scale are softer than your
fingernail?
A) beryl, garnet, tourmaline
B) calcite, fluorite, apatite
C) feldspar, quartz, topaz, corundum, diamond
D) gypsum and talc - ANSWER-D
Which minerals that make up the Mohs scale are softer than a glass plate
but harder than your fingernail?
A) beryl, garnet, tourmaline
B) calcite, fluorite, apatite
C) feldspar, quartz, topaz, corundum, diamond
D) gypsum and talc - ANSWER-B
Which of the following will react readily with acids such as
hydrochloric?
A) calcite
B) quartz
pg. 2
,C) diamond
D) talc - ANSWER-A
All silicate minerals contain which two elements?
A) iron, silicon
B) silicon, sodium
C) oxygen, carbon
D) silicon, oxygen - ANSWER-D
All ferromagnesian minerals contain which two elements?
A) calcium, sodium
B) iron, magnesium
C) iron, potassium
D) chlorine, silicon - ANSWER-B
Which mineral is composed of silicon dioxide (SiO2)?
A) calcite
B) diamond
C) olivine
D) quartz - ANSWER-D
Why doesn't quartz have any cleavages, only fractures?
pg. 3
, A) All oxygens are shared between strongly bonded silicons in a 3-D
framework.
B) All of the metallic cations form strong webs between the silicate
chains.
C) It is made of pure silicon which is very strong.
D) It has strong helical chains in three perpendicular directions. -
ANSWER-A
Silicate igneous rocks make up the ________.
A) bulk of volcanic mountains but not much else on Earth
B) bulk of the Earth's crust and mantle
C) densest rocks and are mainly found in the core
D) majority of shallow rocks covering the continents but everything
deeper is sedimentary and metamorphic - ANSWER-B
Three processes contribute to the formation of every igneous rock:
________.
A) assimilation, crystallization, and dyke injection
B) extrusion, intrusion, and consolidation
C) partial melting, buoyant rise, and crystallization
D) volcanism, plutonism, and magmatic differentiation - ANSWER-C
Plutonic rocks are emplaced at depth yet they can be seen at the Earth's
surface due mainly to
pg. 4
