MCQ Paper Geology Practice Test

MCQ Paper Geology Practice Test
Geology Sample Paper

Q.1: The degree of transparency of a mineral is known as:
a) Schillerization
b) Diaphaneity
c) Phosphorescence
d) None of these
Answer. (b)

Q.2: The Zeolite are characterised in thin section by:
(a) A refractive index lower than Canada balsam and the high birefringence.
(B) A refractive index higher than Canada balsam and the low birefringence.
(c) A refractive index lower than Canada balsam and low birefringence.
(d) A refractive index higher than Canada balsam and high birefringence.
Answer. (c)

Q.3: Mark the correct statement:
a) The presence of the cleavage planes indicate the same strength of bonds between atoms in the
crystal.
b) The presence of the cleavage planes indicate the difference in strength of bonds between atoms
in the crystal.
c) For cleavage strength of bonds between atoms in the crystal is not responsible.
d) Both a) & c) are correct.
Answer. (b)

Q.4: X-ray methods of the study of minerals are based on.... of the x-rays:
(a) Emission-spectral analysis.
(b) Thermal analysis.
(c) Diffraction analysis.
(d) None of these.
Answer: (c)

Q.5: Dodecahedral type cleavage is shown by:
a) Galena
b) Gypsnm
c) Sphalerite
d) Scheelite
Answer. (c)

Q.6: The property of mineral by which it offers the resistance to breaking, crushing,
bending or tearing, is known as:
a) Parting
b) Fracture
c) Cleavage
d) Tenacity
Answer. (d)

Q.7: Calcite is characterised by:
(a) Low hardness, vitreous luster and optically positive character.
(b) Low hardness, rhombohedra cleavage and optically negative character.
(c) Low hardness, twinkling effect under the microscope and optically positive character.
(d) Rhombohedral cleavage, low interference colour and optically negative character.
Answer. (b)

Q.8: Litharge is an ore for the extraction of:
a) Copper
b) Antimony
c) Lead
d) Manganese
Answer. (c)

Q.9: Schillerization is shown by:
a) Plagoclarge
b) Angite
c) Hypersthene
d) Diamond
Answer. (c)

Q.10: Calcite and magnesite can be distinguished from one another in thin section
(a) By their cleavage.
(b) By difference in their indices.
(c) By difference in their birelringence.
(d) That the magnesite is never twinned.
Answer: (d)

Q.11: These minerals which after being exposed to ultra-violet light emit Iight are known as:
a) Fluorescent.
b) Phosphorescent
c) Irridescent
d) Opalescent
Answer. (a)

Q.12: How many cleavage sets are found in quartz mineral:
A) One
b) Two
c) Three
d) Absent
Answer. (d)

Q.13: X-ray analysis makes the use of the:
(a) Chemical composition of the mineral.
(b) Definite atomic structure of the mineral.
(c) Cleavage property of the mineral.
(d) Bonding property of the mineral.
Answer: (b)

Q.14: Generally pyroxenes and Ampliboles show the
a) Pinacoidal Cleavage
b) Prismatic Cleavage
c) Octohedral Cleavage
d) Pyramidal Cleavage
Answer. (b)

Q.15: When a mineral breaks with curved concavities the fractured surface is known as:
a) Uneven
b) Even
C) Conchoidal
d) Hackly
Answer. (c)

Q.16: Wall rocks surrounding a magmatic instrusion become hot by:
(a) Conduction.
(b) Convection.
(c) Radiation.
(d) Convection and radiation.
Answer. (a)

Q.17: In which of the following minerals cleavage is absent:
a) Tale
b) Calcite
c) Topaz
d) Corundum
Answer. (d)

Q.18: Which instrument is used to determine the accurate hardness of a mineral:
a) Scalerometer
b) X-ray spectrometer
c) Pycnometer
d) Electron microscope
Answer. (a)

Q.19: Presence of some elements in small amounts may cause the mineral to be deeply
coloured such elements are called:
a) Chromophore
b) Allochromatic
c) lndichromatic
d) None of these
Answer. (a)

Q.20: At constant chemical composition, in the absence of volatiles, the melting temperature
shifts to:
(a) Lower temperatures at higher pressures.
(b) Higher temperatures at higher pressures.
(c) Higher temperatures at lower pressure.
(d) There is no change in melting temperature.
Answer. (b)

Q.21: “Pyroelectricity” devIopes due to:
a) Compression
b) Temperature
c) Tension
d) All of the above
Answer. (b)

Q.22: Which mineral shows pyro-electric property:
a) Quarts
b) Tonrmaline
c) Flvorite
d) Diamond
Answer. (a)

Q.23: Mark the correct statement:
(a) The rate of crystallisation is slow in labile region.
(b) The rate of crystallisation is rapid in metastable region and slow in labile region.
(c) The rate of crystallisation is rapid in labile region and slow in metastable region.
(d) The rate of crystallisation is same in both the regions.
Answer. (c)

Q.24: Silicate crystals are generally:
a) lsotropic
b) Isodesimic
c) Mesodesmic
d) Anisodesmic
Answer. (c)

Q.25: Silicate structure in which two tetrahedral sharing one oxygen is called:
a) Neso-silicate
b) Soro-silicate
c) Phyllosilicater
d) Tekto-silicate
Answer. (b)