Economic Geology Model Test Paper
Geology Practice Objective Quiz
Q.1: 'Witwatersrand" (south Africa) is famous for:
(a) Coal deposits.
(b) Copper deposits.
(c) Sedimentary uranium deposits.
(d) Sedimentary Mn and Fe deposits.
ANSWER.(c)
Q.2: The evidence for the occurrence of mobilized gold in nature includes:
(a) Occurrence of delicate forms siach as euhedral, fiiamental, dent rides etc.
(b) Etching of gold grains and crystals.
(c) Small grain size of gold found in the highly weathered zone with loss of Ag, Cu and other metals.
(d) All the above.
ANSWER.(d)
Q.3: Most of the bauxite deposits of central and western India have been formed from:
(a) Granite.
(b) Syenite.
(c) Nepheline syenite.
(d) Basalt.
ANSWER. (d)
Q4: Supergene sulphide enrichment zone is found:
(a) Above the water table.
(b) Below the water table.
(C) Near the ground surface.
(d) ln oxidizing zone.
ANSWER.(b)
Q.5: "Gossans" is a:
(a) Ferruginous residue.
(b) Siliceous residue.
(c) Calcareous residue.
(d) Organic residue.
ANSWER.(a)
Q.6: Deep depth of oxidation zone indicates:
(a) Absence of groundwater.
(b) Presence of more sulphides.
(c) Deep fracture zones.
(d) Non-availability of metals at shallow depth.
ANSWER.(c)
Q.7: An increase in pressure will cause a reaction to move in a direction in which the total
Volume of the system:
(a) Increase.
(b) Decrease.
(c) Unchange.
(d) None of these.
ANSWER.(b)
Q.8 : The ore deposits formed due to weathering do not form any metallogenic epoch
because:
(a) Weathering is not a ore forming process.
(b) The process of weathering as operated at all times in the earth’s history.
(c) Weathering cannot form ore deposits.
(d) Weathering process includes both chemical and mechanical processes.
ANSWER.(b)
Q9 : Prospecting by geophysical methods is based on the typical properties exhibited by
rock formations like :
(a) Electrical/magnetic, gravitational and resistivity.
(b) Electrical and magnetic.
(c) Magnetic and gravitational.,
(d) None of these.
ANSWER.(a)
Q.10 : ln what context are the terms like percussive rotary, flushing, mud, drilling cables,
drilling bits, logs, hydraulic, diamonds used :
(a) In prospecting.
(b) ln mining context.
(c) ln geological context.
(d) ln hydro geological survey.
ANSWER.(a)
Q.11: Which of the following organizations and agencies are responsible for prospecting in?
India:
(a) GSI and MECL.
(b) GSI and Coal India.
(c) State and central Govt.
(d) Private investors.
ANSWER.(a)
Q.12: Gravity anomalies are.... and much than magnetic anomalies:
(a) Smaller and smoother respectively.
(b) Bigger and smoother respectively.
(c) Bigger and irregular respectively.
(d) Small and irregular respectively.
ANSWER. (a)
Q.13: Boggier correction in Gravity prospecting accounts for:
(a) Genocidal shape of the earth.
(b) Attraction of material between the station and the datum plane.
(c) Changes in elevelation between stations.
(d) Surface irregularities in vicinity of the station.
ANSWER. (b)
Q.14 the magnitude of gravity on the earth’s surface depends on:
(a) Latitude, elevation and topography.
(b) Latitude, elevation, topography and density variations in the subsurface.
(C) Latitude, elevation, topography and earth tides.
(d) Latitude, elevation, topography, earth tides and density variations in the subsurface.
ANSWER. (d)
Q.15: Torsion balance surveys are conducted for:
(a) Gravity prospecting.
(b) Magnetic prospecting.
(c) Seismic prospecting.
(d) Electrical prospect cal.
ANSWER. (a)
Q.16: Direct exploration of chromate, is generally done by:
(a) Seismic method.
(b) Resistivity method.
(c) Gravity method.
(d) Magnetic method.
ANSWER. (c)
Q.17: Which method is used for detailed exploration of oil and gas?
(a) Gravity method.
(b) Magnetic method.
(c) Seismic reflection method.
(d) Seismic refraction method.
ANSWER.(c)
Q.18: Seismic methods are useful in determining:
(a) Depth to bed rock.
(b) Slope of the bed rock.
(c) Depth to water table.
(d) All the above.
ANSWER.(d)
Q.19: In general electrical methods are employed for:
(a) Relatively shallow subsurface exploration.
(b) Deep subsurface exploration.
(c) Very deep subsurface exploration.
(d) Groundwater exploration only.
ANSWER.(a)
Q.20: From the following, which mineral has a high dielectric capacity?
(a) Quartz.
(b) Mica.
(c) Feldspar.
(d) Calcite.
ANSWER.(b)
Q.21: Self potential method is the most suitable method for prospecting of:
(a) Carbonates.
(b) Sulphide ore.
(c) Ferruginous ores.
(d) None of these.
ANSWER.(b)
Q.22: In winner configuration the electrodes are:
(a) Equally spaced.
(b) Unequally spaced.
(c) Space between current electrodes is more than the potential electrodes.
(d) None of these.
ANSWER.(a)
Q.23: The potential drop ratio method is mainly used to detect:
(a) An ore body.
(b) The vertical discontinuities.
(c) The horizontal discontinuities.
(d) None of these.
ANSWER.(c)
Q.24: The term inductive resistivity refers to:
(a) Conductivity converted to resistivity.
(b) Resistivity converted to conductivity.
(c) Zero conductivity.
(d) Zero resistivity.
ANSWER.(a)
Q.25: Copper, in a calcareous environment is:
(a) Mobile.
(b) Immobile.
(c) Sometimes mobile and sometimes immobile.
(d) None of these.
ANSWER.(b)
Geology Practice Objective Quiz
Q.1: 'Witwatersrand" (south Africa) is famous for:
(a) Coal deposits.
(b) Copper deposits.
(c) Sedimentary uranium deposits.
(d) Sedimentary Mn and Fe deposits.
ANSWER.(c)
Q.2: The evidence for the occurrence of mobilized gold in nature includes:
(a) Occurrence of delicate forms siach as euhedral, fiiamental, dent rides etc.
(b) Etching of gold grains and crystals.
(c) Small grain size of gold found in the highly weathered zone with loss of Ag, Cu and other metals.
(d) All the above.
ANSWER.(d)
Q.3: Most of the bauxite deposits of central and western India have been formed from:
(a) Granite.
(b) Syenite.
(c) Nepheline syenite.
(d) Basalt.
ANSWER. (d)
Q4: Supergene sulphide enrichment zone is found:
(a) Above the water table.
(b) Below the water table.
(C) Near the ground surface.
(d) ln oxidizing zone.
ANSWER.(b)
Q.5: "Gossans" is a:
(a) Ferruginous residue.
(b) Siliceous residue.
(c) Calcareous residue.
(d) Organic residue.
ANSWER.(a)
Q.6: Deep depth of oxidation zone indicates:
(a) Absence of groundwater.
(b) Presence of more sulphides.
(c) Deep fracture zones.
(d) Non-availability of metals at shallow depth.
ANSWER.(c)
Q.7: An increase in pressure will cause a reaction to move in a direction in which the total
Volume of the system:
(a) Increase.
(b) Decrease.
(c) Unchange.
(d) None of these.
ANSWER.(b)
Q.8 : The ore deposits formed due to weathering do not form any metallogenic epoch
because:
(a) Weathering is not a ore forming process.
(b) The process of weathering as operated at all times in the earth’s history.
(c) Weathering cannot form ore deposits.
(d) Weathering process includes both chemical and mechanical processes.
ANSWER.(b)
Q9 : Prospecting by geophysical methods is based on the typical properties exhibited by
rock formations like :
(a) Electrical/magnetic, gravitational and resistivity.
(b) Electrical and magnetic.
(c) Magnetic and gravitational.,
(d) None of these.
ANSWER.(a)
Q.10 : ln what context are the terms like percussive rotary, flushing, mud, drilling cables,
drilling bits, logs, hydraulic, diamonds used :
(a) In prospecting.
(b) ln mining context.
(c) ln geological context.
(d) ln hydro geological survey.
ANSWER.(a)
Q.11: Which of the following organizations and agencies are responsible for prospecting in?
India:
(a) GSI and MECL.
(b) GSI and Coal India.
(c) State and central Govt.
(d) Private investors.
ANSWER.(a)
Q.12: Gravity anomalies are.... and much than magnetic anomalies:
(a) Smaller and smoother respectively.
(b) Bigger and smoother respectively.
(c) Bigger and irregular respectively.
(d) Small and irregular respectively.
ANSWER. (a)
Q.13: Boggier correction in Gravity prospecting accounts for:
(a) Genocidal shape of the earth.
(b) Attraction of material between the station and the datum plane.
(c) Changes in elevelation between stations.
(d) Surface irregularities in vicinity of the station.
ANSWER. (b)
Q.14 the magnitude of gravity on the earth’s surface depends on:
(a) Latitude, elevation and topography.
(b) Latitude, elevation, topography and density variations in the subsurface.
(C) Latitude, elevation, topography and earth tides.
(d) Latitude, elevation, topography, earth tides and density variations in the subsurface.
ANSWER. (d)
Q.15: Torsion balance surveys are conducted for:
(a) Gravity prospecting.
(b) Magnetic prospecting.
(c) Seismic prospecting.
(d) Electrical prospect cal.
ANSWER. (a)
Q.16: Direct exploration of chromate, is generally done by:
(a) Seismic method.
(b) Resistivity method.
(c) Gravity method.
(d) Magnetic method.
ANSWER. (c)
Q.17: Which method is used for detailed exploration of oil and gas?
(a) Gravity method.
(b) Magnetic method.
(c) Seismic reflection method.
(d) Seismic refraction method.
ANSWER.(c)
Q.18: Seismic methods are useful in determining:
(a) Depth to bed rock.
(b) Slope of the bed rock.
(c) Depth to water table.
(d) All the above.
ANSWER.(d)
Q.19: In general electrical methods are employed for:
(a) Relatively shallow subsurface exploration.
(b) Deep subsurface exploration.
(c) Very deep subsurface exploration.
(d) Groundwater exploration only.
ANSWER.(a)
Q.20: From the following, which mineral has a high dielectric capacity?
(a) Quartz.
(b) Mica.
(c) Feldspar.
(d) Calcite.
ANSWER.(b)
Q.21: Self potential method is the most suitable method for prospecting of:
(a) Carbonates.
(b) Sulphide ore.
(c) Ferruginous ores.
(d) None of these.
ANSWER.(b)
Q.22: In winner configuration the electrodes are:
(a) Equally spaced.
(b) Unequally spaced.
(c) Space between current electrodes is more than the potential electrodes.
(d) None of these.
ANSWER.(a)
Q.23: The potential drop ratio method is mainly used to detect:
(a) An ore body.
(b) The vertical discontinuities.
(c) The horizontal discontinuities.
(d) None of these.
ANSWER.(c)
Q.24: The term inductive resistivity refers to:
(a) Conductivity converted to resistivity.
(b) Resistivity converted to conductivity.
(c) Zero conductivity.
(d) Zero resistivity.
ANSWER.(a)
Q.25: Copper, in a calcareous environment is:
(a) Mobile.
(b) Immobile.
(c) Sometimes mobile and sometimes immobile.
(d) None of these.
ANSWER.(b)
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