BU 3 Flashcards by Gregorio Mahinay III

Which does not belong to the discontinuous series of Bowen’s Reaction Series?
A. Biotite
B. Olivine
C. Amphibole
D. Plagioclase

D. Plagioclase

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What year did the collapse in Semirara Panian Pit happened which resulted to death of 5
miners?
A. 2015
B. 2009
C. 2013
D. 2011

C. 2013

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Which property of metals allows them to be hammered or rolled into thin sheets?
A. Ductility
B. Malleability
C. Conductivity
D. Brittleness

B. Malleability

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A rock layer is observed with a true dip of 45°, and the measured apparent thickness of the
layer in a borehole is 10 m. What is the true thickness of the rock layer?
A. 10.6 m
B. 7.07 m
C. 15 m
D. 10 m

B. 7.07 m

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In flotation, it refers to the process of recovering as much of still remaining valuable minerals
in slurry.
A. Differential flotation
B. Cleaner flotation
C. Middlings
D. Scavenging flotation

D. Scavenging flotation

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A mineral with a streak color of black, no cleavage, with a hardness of 3.5 and mineral brass
yellow.
A. Malachite
B. Chalcopyrite
C. Limonite
D. Bornite

B. Chalcopyrite

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Which country is the largest producer of nickel in 2023?
A. Philippines
B. Indonesia
C. Russia
D. France

B. Indonesia

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A copper mine delivers 1,800 dry short tons of ore with a grade of 1% to the concentrator
which in turn mills and processes it at a concentration ratio of 30 to 1 producing concentrate at a
grade of 25%. What is the mill recovery?
A. 80 %
B. 85.5 %
C. 81 %
D. 83.3 %

A. 80 %

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In smelting, slags act as the ______ of the impurities present in metal being smelted.
A. Source
B. Reducer
C. Precipitant
D. Collector

D. Collector

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Which fold structure is characterized by limbs that dip away from the axial plane?
A. Anticline
B. Syncline
C. Monocline
D. Recumbent fold

A. Anticline

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The formation of the supercontinent Pangaea occurred during which period?
A. Triassic
B. Devonian
C. Permian
D. Silurian

C. Permian

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Refers to mineral deposits that were emplaced in their hosts through open space or fracture
filling.
A. Epigene
B. Supergene
C. Hypogene
D. Hypabyssal

A. Epigene

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How much sulfur is in 1,000 MT of ore containing 25% Galena, 12% Chromite, 3%
Malachite, 2% Hematite and 3% moisture.
A. 30.45 MT
B. 31.45 MT
C. 32.45 MT
D. 33.45 MT

C. 32.45 MT

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Which trench is famous for its biodiversity and unique species adapted to extreme
conditions?
A. Mariana Trench
B. Tonga Trench
C. Java Trench
D. Puerto Rico Trench

A. Mariana Trench

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It shall take primary responsibility for the acceptance, processing, evaluation and monitoring
of the Environmental Impact Statements and Initial Environmental Examinations in coordination
with the Bureau.
A. DENR
B. Provincial Governor/City Mayor
C. EMB
D. MGB

C. EMB

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Total number of Sustainable Development Goals?
A. 12
B. 8
C. 17
D. 15

C. 17

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At critical speed of mill, there is ______ of the grinding media resulting to optimum grinding
action.
A. Centrifuging
B. Cascading
C. Cataracting
D. Discharging

C. Cataracting

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The most important process in the formation of petroleum.
A. Kerogenesis
B. Catagenesis
C. Migration
D. Deposition

B. Catagenesis

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Intended as sources of water supply requiring conventional treatment.
A. Class A
B. Class AA
C. Class SA
D. Class B

A. Class A

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Which international standard is commonly followed for sustainable mining practices?
A. ISO 14001
B. ISO 9001
C. ASTM
D. OSHA

A. ISO 14001

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Flotation reagent which enhances the collector coating on the mineral surface.
A. Activator
B. Modifier
C. Conditioner
D. Depressant

A. Activator

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A mines incentive bonus scheme provides for a 50% bonus for development advance beyond
the standard of 3 meters per day per crew, for which they get 300 pesos per day. What is the total
compensation due to a crew that advanced 105 meters for a 25 working day month, assuming no
holidays and no night work?
A. Php 6500
B. Php 7500
C. Php 12,000
D. Php11,000

C. Php 12,000

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The most common Precambrian fossils are ______ layered mounds of calcium carbonate.
A. Eukaryotes
B. Eukaryotes
C. Stromatolites
D. Chert

C. Stromatolites

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Ensure access to affordable, reliable, sustainable, and modern energy for all.
A. SDG 5
B. SDG 12
C. SDG 3
D. SDG 7

D. SDG 7

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In CIL, activated carbon is in contact with the cyanide solution ______ the leaching process. A. Before B. During C. After D. Intermediate

B. During

Which of the following correctly orders the geologic time scale from largest to smallest? A. Era, Eon, Period, Epoch B. Eon, Era, Period, Epoch C. Epoch, Period, Era, Eon D. Period, Epoch, Era, Eon

B. Eon, Era, Period, Epoch

The discovery of the first REE was made in which country? A. China B. Sweden C. France D. USA

B. Sweden

Basically concerned with the buoyancy of the blocks of the earth’s crust as they rest on the mantle. A. Isostacy B. Asthenosphere C. Magmatic Differentiation D. Equilibrium

A. Isostacy

Which international convention is aligned with the objectives of RA 6969 regarding the control of hazardous substances? A. Kyoto Protocol B. Stockholm Convention C. Paris Agreement D. Montreal Protocol

B. Stockholm Convention

Which property describes a metal’s ability to be drawn into thin wires? A. Ductility B. Malleability C. Hardness D. Brittleness

A. Ductility

Which of the following substances are regulated under RA 6969? A. Food additives B. Pharmaceuticals C. Pesticides and toxic chemicals D. Textile dyes

C. Pesticides and toxic chemicals

The boundary between the mantle and outer core: A. Mohorovicic discontinuity B. Lehmann discontinuity C. Gutenberg discontinuity D. Wegener discontinuity

C. Gutenberg discontinuity

REE which was first to be isolated and recognized as a distinct element? A. Yttrium B. Lanthanum C. Cerium D. Neodymium

A. Yttrium

A process of enlarging and standardizing particle size by transforming dusty or hard to use material fines into a dry granular shape. A. Flotation B. Fusion C. Agglomeration D. Flocculation

C. Agglomeration

Which of the following rocks is commonly formed in a regional metamorphism environment? A. Marble B. Quartzite C. Schist D. Basalt

C. Schist

Which one of the following represents the greatest expanse of geological time? A. Mesozoic B. Cenozoic C. Paleozoic D. Precambrian

D. Precambrian

Structure possessing ring-like silicate tetrahedra. A. Inosilicate B. Nesosilicate C. Sorosilicate D. Cyclosilicate

D. Cyclosilicate

What is the ratio of concentration for a treated copper ore with the following assays: Feed=0.30% Cu, Concentrate=25% Cu, Tails=0.004% Cu. A. 95:1 B. 96:1 C. 95.4:1 D. 97:1

B. 96:1

The viscosity of silicates ______ with the percentage of silica above that needed for mono silicate. A. Is not affected B. Increases C. Decreases D. Indeterminate

B. Increases

Mayon volcano is of what type? A. Cinder cone B. Composite C. Shield D. Caldera

B. Composite

The largest active volcano in the world. A. St. Helens B. Pinatubo C. Mauna Loa D. Kilimanjaro

C. Mauna Loa

What is 48 degrees F in the centigrade scale? A. 18 deg C B. 9 deg C C. 12 deg C D. 6 deg C

B. 9 deg C

The point in the orbit of a planet or other astronomical body, at which it is closest to the sun. A. Equinox B. Perihelion C. Solstice D. Aphelion

B. Perihelion

Ionosphere is a part of what layer of the atmosphere? A. Mesosphere B. Troposphere C. Exosphere D. Stratosphere

A. Mesosphere or Thermosphere

It is a common reducing agent in fire assaying. A. Niter B. Flour C. Bone D. Limestone

B. Flour

Which of the following is the economic mineral of manganese? A. Pyrolusite B. Hematite C. Calcite D. Garnierite

A. Pyrolusite

How much sulfur is in 1,000 MT of ore containing 25% Galena, 12% Chromite, 3% Malachite, 2% Hematite and 3% moisture. A. 30.45 MT B. 31.45 MT C. 32.45 MT D. 33.45 MT

C. 32.45 MT

What is the approximate diameter of Earth? A. 6,371 km B. 20,000 km C. 15,000 km D. 12,742 km

D. 12,742 km

A reservoir has a capacity of 10,000 cubic meters. How many gallons is that? A. 2,641,790 gallons B. 2,502,130 gallons C. 1,506,050 gallons D. 3,081,905 gallons

A. 2,641,790 gallons

What type of lava is typically associated with explosive volcanic eruptions? A. Basaltic B. Andesitic C. Rhyolitic D. Dacitic

C. Rhyolitic

What sedimentary rock forms from the deposition of large, angular clasts in a high-energy environment? A. Limestone B. Shale C. Breccia D. Sandstone

C. Breccia

It is the product of an iron blast furnace. A. Wrought iron B. Cast iron C. Pig iron D. Malleable iron

C. Pig iron

The term “Rare Earth” is somewhat misleading because: A. They are extremely rare in the Earth’s crust B. They are difficult to extract C. They are not all metallic in nature D. They do not occur naturally

B. They are difficult to extract

Collector-coated mineral surface has ______ contact angle compared with uncoated one. A. High B. Low C. Intermediate D. Very high

A. High

The largest active volcano in the world. A. Mauna Loa B. Mt. Etna C. Mt. Fuji D. Krakatoa

A. Mauna Loa

Commonly desired weight of lead button. A. 32 grams B. 24 grams C. 26 grams D. 28 grams

D. 28 grams

Refers to that portion of the Mine Rehabilitation Fund in the amount not less than Php 500,000 that will be used to cover maintenance, communication services and consulting that may be incurred by the Multipartite Monitoring Team. A. MRF B. CLRF C. MTF D. Contingency Fund

C. MTF

The chronological order in the sequence of mineral deposition. A. Paragenesis B. Zoning C. Sorting D. Gradation

A. Paragenesis

Which province in the Philippines is a major coal producer? A. Bohol B. Antique C. Davao del Sur D. Cebu

B. Antique

The mineral recovery processes most applicable to sulfide ores, particularly chalcopyrite. A. Cyanidation B. Flotation C. Flocculation D. Magnetic separation

B. Flotation

In fire assaying for gold, this is the acid used for to separate Ag from Au. A. Mercury B. HCl C. Nitric Acid D. Cyanide

C. Nitric Acid

Also known as destructive plate boundary. A. Divergent B. Convergent C. Transform D. Shear

B. Convergent

Ionosphere is a part of what layer of the atmosphere? A. Mesosphere B. Troposphere C. Exosphere D. Stratosphere

A. Mesosphere or Thermosphere

A suite of rocks that includes ultramafic rocks, gabbro, diabase, and volcanic rocks. A. Ophiolite sequence B. Bouma sequence C. Alteration zone D. Lithology

A. Ophiolite sequence

For the silver to be completely parted from the gold, a ratio of at least Ag:Au is required. A. 2:1 B. 10:1 C. 4:1 D. 7:1

C. 4:1

The iron sulfide concentrates of Philippine Pyrite Corp. are known to assay 27% pyrite. What is the % sulfur content of the concentrates assuming it contains no other sulfide minerals? A. 15.43 B. 14.43 C. 13.43 D. 12.43

B. 14.43

Brass is an alloy of copper and ______. A. Lead B. Iron C. Zinc D. Tin

C. Zinc

The point in the orbit of a planet or other astronomical body, at which it is farthest from the sun. A. Equinox B. Perihelion C. Solstice D. Aphelion

D. Aphelion

What is the primary mineral found in the Nonoc Island deposit? A. Iron B. Nickel C. Gold D. Silver

B. Nickel

What project category are exempted to secure ECC? A. Category A B. Category B C. Category C D. Category D

D. Category D

Instead of an ECC, what will be issued to the applicant? A. Permit B. Certificate of Non-Coverage C. None D. Certificate of No Compliance

B. Certificate of Non-Coverage

Which of the following refers to the water that is trapped during the formation of sedimentary deposits? A. Connate water B. Magmatic water C. Igneous water D. Meteoric water

A. Connate water

Which metamorphic rock typically forms from sandstone? A. Slate B. Quartzite C. Marble D. Phyllite

B. Quartzite

Which metal is most commonly used as a catalyst in automotive catalytic converters to reduce emissions? A. Platinum B. Gold C. Copper D. Silver

A. Platinum

Surface characteristics of mineral particles properly coated with flotation collector. A. Hydrophilic B. Aerophobic C. Hydrophobic D. The same as uncoated

C. Hydrophobic

Also known as constructive plate boundary. A. Divergent B. Convergent C. Transform D. Shear

A. Divergent

Which rank of coal has the highest sulfur content? A. Anthracite B. Bituminous C. Sub-bituminous D. Lignite

B. Bituminous

The energy required to reduce the size of particles is proportional to the ratio of the initial size of a typical dimension to the final size of that dimension. A. Rittinger’s law B. Kick’s law C. Bond’s law D. Hooke’s law

B. Kick’s law

Type of jaw crusher where the lower end of the movable crushing surface is the fulcrum end while the upper end swings to and from the stationary surface. A. Dodge type B. Blake type C. Single toggle type D. Double toggle type

A. Dodge type

A small deformed under small stresses acting over a long period of time. A. Fatigue B. Creep C. Landslide D. Mass wasting

B. Creep

Which eon represents the time before the emergence of most macroscopic life forms? A. Archaean B. Proterozoic C. Phanerozoic D. Hadean

B. Proterozoic

Which planet is known for having a retrograde rotation? A. Mercury B. Venus C. Mars D. Saturn

B. Venus

A reservoir has a capacity of 10,000 cubic meters. How many gallons is that? A. 2,641,720 gallons B. 2,502,130 gallons C. 1,506,050 gallons D. 3,081,905 gallons

A. 2,641,720 gallons

Are permeable layers of rock or soil which transmit water freely. A. Aquitard B. Water table C. Aquiclude D. Aquifer

D. Aquifer

Main proponent of continental drift theory. A. Harry Hess B. Alfred Wegener C. James Hutton D. Georges Cuvier

B. Alfred Wegener

Which of the following minerals is typically associated with the potassic alteration zone? A. Quartz B. K-feldspar C. Biotite D. Chlorite

D. Chlorite

What is the primary regulatory framework governing coal exploration in the Philippines? A. RA 7942 B. RA 9513 C. PD 972 D. RA 7160

C. PD 972

Term used for parallel main streams with short tributaries meeting them at right angles. A. Dendritic B. Radial C. Rectangular D. Trellis

C. Rectangular

Which feature is characterized by steep slopes and is found between the continental shelf and the abyssal plain? A. Continental slope B. Seamount C. Oceanic ridge D. Trench

A. Continental slope

A copper mining operation produces 10,000 dry short tons per day of 1% copper grade which it sends to a concentrator, which in turn produces a 30% copper concentrate at a recovery of 90%. What is the concentration ratio? A. 37.5:1 B. 33.3:1 C. 27.5:1 D. 27.0:1

B. 33.3:1

It states that the work in crushing or grinding is inversely proportional to the square root of the new surface produced on the particles. A. Rittinger’s law B. Kick’s law C. Bond’s law D. Hooke’s law

C. Bond’s law

What year did the collapse in Semirara Panian Pit happen which resulted to death of 5 miners? A. 2015 B. 2009 C. 2013 D. 2011

C. 2013

A mixture of impure arsenides and antimonides. A. Matte B. Slag C. Speiss D. Flux

C. Speiss

Which mineral is commonly referred to as “brimstone”? A. Sulfur B. Phosphorus C. Calcium D. Arsenic

A. Sulfur

Which metal is commonly alloyed with steel to improve its hardness and resistance to wear, often used in tools and machinery? A. Manganese B. Zinc C. Lead D. Tin

A. Manganese tungsten, chromium, vanadium, and manganese

What is the primary factor that determines the texture of an igneous rock? A. Chemical composition B. Cooling rate C. Mineral content D. Pressure during formation

B. Cooling rate

Fusion is one process in fire assaying where the flux with samples to be analyzed for Au are placed in fire assay crucibles and melted in the furnace. What is the required temperature for the process? A. 800 deg C B. 700 deg C C. 900 deg C D. 1050 deg C

D. 1050 deg C

Are cone-shaped masses of dripstones formed on cave ceilings. A. Stalagmites B. Column C. Stalactites D. Fjords

C. Stalactites A fjord is a long, narrow, and deep inlet of the sea with steep cliffs on both sides. It is formed by the geological process of glaciation, which occurred repeatedly throughout the last several ice ages.

Iron-rich sphere with small amounts of Ni and other elements. A. Mesosphere B. Asthenosphere C. Core D. Lithosphere

C. Core

D. 27.0:1

BU 3 Flashcards

(100 cards)