Stones are obtained from rocks that are made up of:
a) Ores
b) Minerals
c) Chemical compounds
d) Crystals
Answer: b
Explanation: Rocks are made up of minerals. They can be monomineralic (single mineral) or polymineralic (more than one mineral).
Which one of the following is not a classification of stones?
a) Physical Classification
b) Mineralogical Classification
c) Chemical Classification
d) Practical Classification
Answer: b
Explanation: The classifications of stones are physical (based on structure), chemical (based on chemical composition), practical (based on usage) and geological (based on the mode of origin). Mineralogical classification is not a means of classifying stones in general. It’s called chemical classification.
The hot molten material occurring naturally below the surface of the Earth is called:
a) Lava
b) Slag
c) Magma
d) Tuff
Answer: c
Explanation: Hot molten material is called Lava when it erupts from a volcano and reaches the surface. Slag is waste material from the smelting of ore. Tuff is a porous rock formed by a consolidation of volcanic ash.
At what depth and rate is a hypabyssal rock formed?
a) Slow cooling of magma at considerable depth
b) Quick cooling of magma at a shallow depth
c) Rapid cooling of magma at Earth’s surface
d) Rapid cooling of magma at a shallow depth
Answer: b
Explanation: Plutonic rocks are formed by slow cooling of magma at considerable depth. Volcanic rocks are formed near the surface of Earth by rapid cooling of magma. Hypabyssal rocks are formed at a quick rate of cooling of magma at considerably shallow depths.
What is a sedimentary deposit?
a) Weathered product remains at site
b) Weathered product carried away in solution
c) Weathered product gets carried away agents
d) Insoluble weathered product is carried away in suspension
Answer: d
Explanation: Weathered product remains at site is called residual deposit. Weathered product carried away in solution is chemical deposit and Weathered product gets carried away agents is organic deposit.
Which factor disturbs the equilibrium of rocks, commencing metamorphism?
a) Increase in temperature
b) Decrease in temperature and pressure
c) Increase in temperature and pressure
d) Decrease in pressure
Answer: c
Explanation: Rocks are stable at a temperature below 200°C and at the pressure existing. Any increase in above two factors can initiate the process of metamorphism. One factor alone is not sufficient to start metamorphism.
Which of the following is not a metamorphic change?
a) Calcite to schist
b) Limestone to marble
c) Shale to slate
d) Granite to gneisses
Answer: a
Explanation: Calcite is a carbonate mineral whereas schist is a metamorphic rock formed by metamorphosis of mudstone/shale to the higher degree than slate.
Which of the following rocks are hard and durable?
a) Argillaceous rocks
b) Siliceous rocks
c) Calcareous rocks
d) Carbonaceous rocks
Answer: b
Explanation: Silica predominates in siliceous rock and is less affected by weathering
and hence are hard and durable compared to argillaceous (clay), calcareous (calcium carbonate) or carbonaceous (carbon).
Foliated structure is very common in case of:
a) Sedimentary rocks
b) Plutonic rocks
c) Igneous rocks
d) Metamorphic rocks
Answer: d
Explanation: Foliated rocks can split up into layers along a definite direction only. Sedimentary rocks are generally stratified and igneous rocks are unstratified.
Granite is a type of:
a) Plutonic rock
b) Metamorphic rock
c) Hypabyssal rock
d) Volcanic rock
Answer: a
Explanation: Granite is formed at a slow rate of cooling of magma at considerable depths and so is a type of plutonic rock.
Which of the following is a hand tool used for quarrying?
a) Plier
b) Hammer
c) Quarrying wire
d) XSM
Answer: b
Explanation: Plier is not used in quarrying. Quarrying wire is used for cutting stones at a site. XSM is a manufacturer of quarrying machines. Hammer is used to split rocks.
Which of the following is not an explosive used for blasting?
a) Gelignite
b) Gunpowder
c) Flash powder
d) Nitrocellulose
Answer: c
Explanation: Flash powder is used primarily in fireworks and theatrical pyrotechnics. The other three are widely used in the quarrying field.
Dressing of stones is carried out to:
a) To provide employment to people
b) To make transport of stones to site easy and economic
c) To reduce water content of stone
d) To avoid further works on the stone
Answer: b
Explanation: Dressing reduces the excess weight of the stone and helps in easy transport from the quarry to the site of use, also proving the process to be economic.
How many types of dressings are there with respect to the place of work?
a) 4
b) 3
c) 2
d) None
Answer: c
Explanation: There are two types of dressings based on the place of work. They are quarry dressing and site dressing. Quarry dressing is carried out right after quarrying whereas site dressing is done after transporting the quarried rock to the site.
Circular finished stones are generally used for:
a) Pillar
b) Tombstone
c) Landscaping
d) Column
Answer: d
Explanation: Circular finish dressing yields in a stone with a surface that is round and circular. This is exactly the type of dressed stone which meets the requirements of stone required for column construction.
Quarry faced finished stones are also called:
a) Reticulated finish
b) Hammer faced finished
c) Rock faced stones
d) Plain finish
Answer: c
Explanation: Quarry faced finished stone is directly available from the quarry and has a smooth surface. It doesn’t require any further dressing. They are also called self-faced stones.
Dynamite is a more effective explosive than gelignite.
a) True
b) False
Answer: b
Explanation: Gelignite is more convenient to use and can be used underwater also. Hence, it’s effective than dynamite.
What is sand blasting?
a) Process of making carvings on stone surface
b) Quarrying technique
c) Dressing type
d) Process of using sand to blast stone surface
Answer: a
Explanation: It’s used to carve or clean a surface with a high velocity jet of abrasive material (sand, walnut, steel bits, etc..).
Connect with Us
Follow us on social media to stay updated with the latest resources and news.