Please keep at least one language enabled. || కనీసం ఒక భాషను ఎంచుకోండి.
Question 1
ప్రశ్న 1
Which statement best defines quarrying in the context of building stones?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Quarrying is the process of obtaining useful stone from natural rock formations or rock beds.
• The extracted material may subsequently be used for masonry, dimension stone, aggregate, road work or other engineering purposes.
• Dressing and polishing are later processing operations and are not themselves quarrying.
• Laboratory testing evaluates the properties of the extracted material but does not constitute extraction.
• Therefore Option B correctly states the fundamental purpose of quarrying.
• The extracted material may subsequently be used for masonry, dimension stone, aggregate, road work or other engineering purposes.
• Dressing and polishing are later processing operations and are not themselves quarrying.
• Laboratory testing evaluates the properties of the extracted material but does not constitute extraction.
• Therefore Option B correctly states the fundamental purpose of quarrying.
వివరణ:
Question 2
ప్రశ్న 2
Which group of factors should be considered when selecting a site for a building-stone quarry?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• A quarry must contain sufficient quantities of stone having the quality required for the intended engineering use.
• Geological structure, joints, bedding and weathered zones influence both recoverability and the method of extraction.
• Drainage, accessibility, transport distance, labour, power and equipment availability affect the economy of quarry operation.
• Environmental restrictions and proximity to buildings become particularly important when vibration, noise or other quarry impacts must be controlled.
• Therefore Option D gives the appropriate multi-factor basis for quarry-site selection.
• Geological structure, joints, bedding and weathered zones influence both recoverability and the method of extraction.
• Drainage, accessibility, transport distance, labour, power and equipment availability affect the economy of quarry operation.
• Environmental restrictions and proximity to buildings become particularly important when vibration, noise or other quarry impacts must be controlled.
• Therefore Option D gives the appropriate multi-factor basis for quarry-site selection.
వివరణ:
Question 3
ప్రశ్న 3
The digging or excavation method of quarrying is most suitable when:
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Digging or excavation is the simplest recognised quarrying method and is appropriate where the material can be removed without heavy cutting or fragmentation.
• It is particularly suited to comparatively soft stone or blocks lying at shallow depth beneath loose material.
• Ordinary excavation tools or suitable mechanical excavation may be sufficient in such conditions.
• Hard massive dimension stone normally requires splitting, cutting or other specialised extraction methods.
• Hence Option A correctly identifies the condition favourable for digging or excavation.
• It is particularly suited to comparatively soft stone or blocks lying at shallow depth beneath loose material.
• Ordinary excavation tools or suitable mechanical excavation may be sufficient in such conditions.
• Hard massive dimension stone normally requires splitting, cutting or other specialised extraction methods.
• Hence Option A correctly identifies the condition favourable for digging or excavation.
వివరణ:
Question 4
ప్రశ్న 4
A useful stone bed occurs immediately below a layer of loose soil and weathered material. What operation is normally necessary before sound stone can be systematically quarried?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Loose soil, weathered rock and other superficial material covering a useful deposit are collectively treated as overburden for quarrying purposes.
• This material must normally be removed before the sound rock can be examined and extracted efficiently.
• Exposing the rock also permits better assessment of joints, bedding, defects and quarry-face conditions.
• Polishing or grouting the overburden would not provide practical access to the underlying sound deposit.
• Therefore Option C correctly identifies the preliminary quarrying operation.
• This material must normally be removed before the sound rock can be examined and extracted efficiently.
• Exposing the rock also permits better assessment of joints, bedding, defects and quarry-face conditions.
• Polishing or grouting the overburden would not provide practical access to the underlying sound deposit.
• Therefore Option C correctly identifies the preliminary quarrying operation.
వివరణ:
Question 5
ప్రశ్న 5
What is the basic principle of the traditional heating method of stone quarrying?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• In the traditional heating method, the exposed upper portion of a rock mass is heated relative to the material beneath it.
• The temperature difference causes unequal expansion within the rock.
• The resulting thermal stresses can help separate a surface layer from the underlying formation.
• The method is historically associated particularly with relatively shallow, approximately horizontal rock layers rather than deep massive extraction.
• Therefore Option B correctly states the physical principle involved.
• The temperature difference causes unequal expansion within the rock.
• The resulting thermal stresses can help separate a surface layer from the underlying formation.
• The method is historically associated particularly with relatively shallow, approximately horizontal rock layers rather than deep massive extraction.
• Therefore Option B correctly states the physical principle involved.
వివరణ:
Question 6
ప్రశ్న 6
Why is the traditional heating method generally unsuitable where high-quality, sound dimension stone is the principal product?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Heating creates differential expansion and thermal stresses specifically to promote separation of the rock.
• Those same stresses can introduce cracking or weaken portions of the material that are intended to remain as useful blocks.
• This is undesirable where large, sound and defect-free dimension stones are required for architectural or structural work.
• Modern cutting or controlled splitting methods generally provide greater control over block integrity for valuable stone.
• Consequently Option D correctly identifies the principal engineering limitation of heating.
• Those same stresses can introduce cracking or weaken portions of the material that are intended to remain as useful blocks.
• This is undesirable where large, sound and defect-free dimension stones are required for architectural or structural work.
• Modern cutting or controlled splitting methods generally provide greater control over block integrity for valuable stone.
• Consequently Option D correctly identifies the principal engineering limitation of heating.
వివరణ:
Question 7
ప్రశ్న 7
Which situation is particularly favourable for quarrying by wedging?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Wedging is a controlled splitting method that takes advantage of existing or deliberately established lines of weakness.
• Natural joints, fissures, cleavage or bedding can provide favourable directions for separation of stone blocks.
• The method can preserve larger blocks better than indiscriminate fragmentation when the rock structure is suitable.
• It is therefore commonly associated with dimension-stone recovery from suitable stratified or jointed formations.
• Hence Option A correctly describes the most favourable condition for wedging.
• Natural joints, fissures, cleavage or bedding can provide favourable directions for separation of stone blocks.
• The method can preserve larger blocks better than indiscriminate fragmentation when the rock structure is suitable.
• It is therefore commonly associated with dimension-stone recovery from suitable stratified or jointed formations.
• Hence Option A correctly describes the most favourable condition for wedging.
వివరణ:
Question 8
ప్రశ్న 8
Why is knowledge of natural joints and bedding important before selecting a splitting direction in a quarry?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Natural joints, bedding and cleavage divide a rock mass into structural blocks and planes of differing resistance.
• Splitting along favourable planes generally requires less effort than forcing fracture across intact sound rock.
• Their spacing and orientation also influence the dimensions of recoverable stone blocks.
• Unfavourable discontinuities may reduce dimension-stone recovery or create defective blocks even when the intact rock itself is strong.
• Therefore Option C correctly explains their significance in quarry planning.
• Splitting along favourable planes generally requires less effort than forcing fracture across intact sound rock.
• Their spacing and orientation also influence the dimensions of recoverable stone blocks.
• Unfavourable discontinuities may reduce dimension-stone recovery or create defective blocks even when the intact rock itself is strong.
• Therefore Option C correctly explains their significance in quarry planning.
వివరణ:
Question 9
ప్రశ్న 9
What is the essential principle of quarrying with a traditional channeling machine?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Channeling is a machine-assisted method intended to create controlled cuts in the rock mass.
• Channels are made along selected sides of the block to define its boundaries.
• The block is then separated from the remaining rock by suitable complementary splitting or cutting operations.
• The method is particularly associated with obtaining comparatively large and regular blocks rather than random fragmented stone.
• Therefore Option B correctly states the basic principle of channeling.
• Channels are made along selected sides of the block to define its boundaries.
• The block is then separated from the remaining rock by suitable complementary splitting or cutting operations.
• The method is particularly associated with obtaining comparatively large and regular blocks rather than random fragmented stone.
• Therefore Option B correctly states the basic principle of channeling.
వివరణ:
Question 10
ప్రశ్న 10
A quarry must produce large rectangular blocks of valuable limestone for dimension-stone work, and preservation of block integrity is more important than maximum fragmentation. Which approach is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Dimension-stone production seeks usable blocks having sufficient size, regularity and freedom from unwanted fractures.
• A method that defines block boundaries by cutting provides greater control than one intended primarily to fragment rock.
• Channeling and modern machine-cutting methods are therefore appropriate where large regular blocks have significant value.
• Excessive uncontrolled cracking would reduce saleable block recovery and increase waste.
• Hence Option D is the best engineering choice for the stated requirement.
• A method that defines block boundaries by cutting provides greater control than one intended primarily to fragment rock.
• Channeling and modern machine-cutting methods are therefore appropriate where large regular blocks have significant value.
• Excessive uncontrolled cracking would reduce saleable block recovery and increase waste.
• Hence Option D is the best engineering choice for the stated requirement.
వివరణ:
Question 11
ప్రశ్న 11
Which statement about modern diamond-wire sawing in dimension-stone quarrying is most accurate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Diamond-wire sawing is an established modern technology for dimension-stone extraction.
• The wire performs controlled cuts through the rock so that selected portions can be separated as large blocks.
• This approach is valuable in granite, marble and other dimension-stone quarries where recovery of intact saleable material is important.
• Compared with highly fragmenting methods, controlled sawing can reduce unwanted cracking and improve block recovery when properly applied.
• Therefore Option A correctly describes its engineering role.
• The wire performs controlled cuts through the rock so that selected portions can be separated as large blocks.
• This approach is valuable in granite, marble and other dimension-stone quarries where recovery of intact saleable material is important.
• Compared with highly fragmenting methods, controlled sawing can reduce unwanted cracking and improve block recovery when properly applied.
• Therefore Option A correctly describes its engineering role.
వివరణ:
Question 12
ప్రశ్న 12
In general civil-engineering terms, blasting as a quarrying method is most appropriately associated with:
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Blasting uses explosive energy to fracture a rock mass and facilitate its removal from the quarry.
• It is particularly useful where hard massive rock must be broken rapidly and large quantities of fragmented material are required.
• Aggregate, road-metal and similar bulk-rock production may therefore favour fragmentation more than dimension-stone production does.
• The method must be selected and carried out under applicable statutory, environmental and safety controls.
• Hence Option C gives the appropriate high-level engineering application.
• It is particularly useful where hard massive rock must be broken rapidly and large quantities of fragmented material are required.
• Aggregate, road-metal and similar bulk-rock production may therefore favour fragmentation more than dimension-stone production does.
• The method must be selected and carried out under applicable statutory, environmental and safety controls.
• Hence Option C gives the appropriate high-level engineering application.
వివరణ:
Question 13
ప్రశ్న 13
Why can excessive or poorly controlled blasting be undesirable in a quarry producing high-value dimension stone?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Dimension stone derives much of its commercial and engineering value from the recovery of large intact blocks.
• Strong shock waves and uncontrolled fracture can create new cracks or extend existing discontinuities beyond the intended separation surface.
• Such damage reduces the volume of stone that can be sold as sound blocks and increases waste.
• For this reason, cutting and carefully controlled splitting methods are often preferred when block integrity is the governing requirement.
• Therefore Option B correctly identifies the principal quality concern.
• Strong shock waves and uncontrolled fracture can create new cracks or extend existing discontinuities beyond the intended separation surface.
• Such damage reduces the volume of stone that can be sold as sound blocks and increases waste.
• For this reason, cutting and carefully controlled splitting methods are often preferred when block integrity is the governing requirement.
• Therefore Option B correctly identifies the principal quality concern.
వివరణ:
Question 14
ప్రశ్న 14
A proposed quarry lies close to vibration-sensitive buildings, while the required product is accurately cut dimension stone. Which broad extraction strategy is most defensible?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Method selection must consider the required product as well as the effects of quarry operations on the surroundings.
• Dimension stone benefits from extraction methods that preserve intact blocks and minimise unintended cracking.
• Proximity to vibration-sensitive structures adds a further reason to avoid unnecessary high-vibration fragmentation methods where practicable.
• Mechanical cutting and controlled splitting can provide greater control, subject to geological suitability, productivity and project requirements.
• Therefore Option D is the most appropriate engineering approach.
• Dimension stone benefits from extraction methods that preserve intact blocks and minimise unintended cracking.
• Proximity to vibration-sensitive structures adds a further reason to avoid unnecessary high-vibration fragmentation methods where practicable.
• Mechanical cutting and controlled splitting can provide greater control, subject to geological suitability, productivity and project requirements.
• Therefore Option D is the most appropriate engineering approach.
వివరణ:
Question 15
ప్రశ్న 15
Match the quarrying method with the condition or objective most characteristically associated with it:
1. Digging or excavation
2. Heating
3. Wedging
4. Channeling
P. Large regular blocks obtained by machine-cut channels
Q. Soft or readily removable stone at shallow depth
R. Separation aided by differential thermal expansion of shallow rock layers
S. Controlled splitting along joints, fissures or prepared splitting lines
1. Digging or excavation
2. Heating
3. Wedging
4. Channeling
P. Large regular blocks obtained by machine-cut channels
Q. Soft or readily removable stone at shallow depth
R. Separation aided by differential thermal expansion of shallow rock layers
S. Controlled splitting along joints, fissures or prepared splitting lines
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Digging or excavation is appropriate for comparatively soft or readily removable material near the surface, giving 1-Q.
• Heating relies on differential expansion to detach shallow layers, giving 2-R.
• Wedging uses favourable discontinuities or prepared splitting lines to separate blocks, giving 3-S.
• Channeling mechanically defines the boundaries of comparatively large regular blocks, giving 4-P.
• Therefore the correct matching is 1-Q, 2-R, 3-S and 4-P, corresponding to Option A.
• Heating relies on differential expansion to detach shallow layers, giving 2-R.
• Wedging uses favourable discontinuities or prepared splitting lines to separate blocks, giving 3-S.
• Channeling mechanically defines the boundaries of comparatively large regular blocks, giving 4-P.
• Therefore the correct matching is 1-Q, 2-R, 3-S and 4-P, corresponding to Option A.
వివరణ:
Question 16
ప్రశ్న 16
Consider the following statements about selection of a quarrying method:
1. Rock hardness and geological structure are relevant.
2. Required block size and final use of the stone are relevant.
3. Production rate, equipment availability and economic considerations are relevant.
4. Blasting is always the best method regardless of stone quality or surrounding conditions.
Which statements are correct?
1. Rock hardness and geological structure are relevant.
2. Required block size and final use of the stone are relevant.
3. Production rate, equipment availability and economic considerations are relevant.
4. Blasting is always the best method regardless of stone quality or surrounding conditions.
Which statements are correct?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Statement 1 is correct because hardness, bedding, joints and other geological features influence how a rock can be separated efficiently.
• Statement 2 is correct because dimension blocks, rubble and crushed aggregate impose different requirements on the extraction process.
• Statement 3 is correct because a technically possible method may still be unsuitable if its production rate, machinery or cost is inconsistent with the project.
• Statement 4 is incorrect because blasting may be unsuitable where vibration, unwanted cracking or high-value block recovery is a major concern.
• Therefore Statements 1, 2 and 3 are correct and Option C is the unique answer.
• Statement 2 is correct because dimension blocks, rubble and crushed aggregate impose different requirements on the extraction process.
• Statement 3 is correct because a technically possible method may still be unsuitable if its production rate, machinery or cost is inconsistent with the project.
• Statement 4 is incorrect because blasting may be unsuitable where vibration, unwanted cracking or high-value block recovery is a major concern.
• Therefore Statements 1, 2 and 3 are correct and Option C is the unique answer.
వివరణ:
Question 17
ప్రశ్న 17
A granite quarry produces high-value export blocks, and visible veins and defects must be avoided while separating blocks from the parent formation. Which modern method is especially suited to making controlled cuts around selected sound rock?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• High-value dimension-stone quarrying attempts to isolate sound portions of the deposit while avoiding visible veins, patches and other defects.
• Diamond-wire cutting permits planned cuts along selected faces of the required rock block.
• Current dimension-stone quarry practice uses this technology extensively for hard stones including commercial granite.
• The objective is to improve dimensional control and saleable block recovery rather than to fragment the entire rock mass.
• Therefore Option B is the appropriate modern extraction method.
• Diamond-wire cutting permits planned cuts along selected faces of the required rock block.
• Current dimension-stone quarry practice uses this technology extensively for hard stones including commercial granite.
• The objective is to improve dimensional control and saleable block recovery rather than to fragment the entire rock mass.
• Therefore Option B is the appropriate modern extraction method.
వివరణ:
Question 18
ప్రశ్న 18
A shallow deposit consists of comparatively soft lateritic building stone that can be separated into manageable blocks without major rock cutting. Which method is most appropriate as the first consideration?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Soft stone occurring at shallow depth may often be removed by straightforward excavation rather than by elaborate fragmentation methods.
• Lateritic building stone in suitable formations can be comparatively easy to cut or excavate when fresh and accessible.
• The exact machinery or tool used depends on the actual hardness, block dimensions and production requirement.
• There is no engineering justification for selecting a more disruptive method when simple excavation can recover the required material satisfactorily.
• Hence Option A is the most appropriate initial method.
• Lateritic building stone in suitable formations can be comparatively easy to cut or excavate when fresh and accessible.
• The exact machinery or tool used depends on the actual hardness, block dimensions and production requirement.
• There is no engineering justification for selecting a more disruptive method when simple excavation can recover the required material satisfactorily.
• Hence Option A is the most appropriate initial method.
వివరణ:
Question 19
ప్రశ్న 19
A well-bedded sandstone deposit contains favourable natural separation planes, and regular masonry blocks are required with minimum unwanted breakage. Which traditional quarrying method is especially appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Sandstone is commonly a stratified rock and may contain natural bedding, joints or fissures that provide favourable splitting directions.
• Wedging can take advantage of these planes to detach useful blocks with relatively controlled fracture.
• This is advantageous where regular masonry stone rather than highly fragmented aggregate is required.
• Unnecessary aggressive fragmentation could reduce usable block size and increase waste.
• Therefore Option D correctly matches the rock condition and product requirement.
• Wedging can take advantage of these planes to detach useful blocks with relatively controlled fracture.
• This is advantageous where regular masonry stone rather than highly fragmented aggregate is required.
• Unnecessary aggressive fragmentation could reduce usable block size and increase waste.
• Therefore Option D correctly matches the rock condition and product requirement.
వివరణ:
Question 20
ప్రశ్న 20
Which sequence represents a logical high-level progression for opening and working a dimension-stone quarry?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Quarry planning should begin with geological and quality assessment so that sound stone zones, defects and structural discontinuities are understood.
• Unsuitable overburden must then be removed to expose the useful formation.
• A safe working face and extraction method can be established according to the geology, product requirement and available equipment.
• Separated blocks are subsequently handled and sorted so that saleable stone is distinguished from waste or lower-grade material.
• Therefore Option B gives the logical high-level sequence.
• Unsuitable overburden must then be removed to expose the useful formation.
• A safe working face and extraction method can be established according to the geology, product requirement and available equipment.
• Separated blocks are subsequently handled and sorted so that saleable stone is distinguished from waste or lower-grade material.
• Therefore Option B gives the logical high-level sequence.
వివరణ:
Question 21
ప్రశ్న 21
A quarry separates 180 m³ of rock from a dimension-stone bench, of which 117 m³ is recovered as saleable dimension-stone blocks. What is the block recovery by volume?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Block recovery by volume is the saleable block volume divided by the total rock volume separated, multiplied by 100.
• The saleable volume is 117 m³ and the separated volume is 180 m³.
• Therefore recovery = (117 / 180) × 100.
• This gives 65 percent.
• Hence Option C is correct, and higher sound-block recovery is generally desirable in dimension-stone quarrying because it reduces waste.
• The saleable volume is 117 m³ and the separated volume is 180 m³.
• Therefore recovery = (117 / 180) × 100.
• This gives 65 percent.
• Hence Option C is correct, and higher sound-block recovery is generally desirable in dimension-stone quarrying because it reduces waste.
వివరణ:
Question 22
ప్రశ్న 22
Which statement about selection of a quarrying method is most technically defensible?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Natural rock masses vary in hardness, jointing, bedding, weathering, defects and block geometry even when they share the same geological name.
• The required product may range from large polished dimension blocks to rubble or crushed aggregate, and each favours different extraction characteristics.
• Recovery, labour, machinery, transport and waste all affect economic performance rather than hourly operating cost alone.
• Environmental and safety restrictions can also exclude methods that are otherwise technically feasible.
• Therefore Option A gives the correct engineering basis for method selection.
• The required product may range from large polished dimension blocks to rubble or crushed aggregate, and each favours different extraction characteristics.
• Recovery, labour, machinery, transport and waste all affect economic performance rather than hourly operating cost alone.
• Environmental and safety restrictions can also exclude methods that are otherwise technically feasible.
• Therefore Option A gives the correct engineering basis for method selection.
వివరణ:
Question 23
ప్రశ్న 23
Which statement best describes an important advantage and limitation of mechanised stone quarrying?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Mechanised quarrying can provide controlled cutting, higher production and more repeatable block dimensions than purely manual operations in suitable deposits.
• Modern equipment such as wire saws, chain saws, hydraulic splitters and other cutting systems is important in dimension-stone production.
• However, machinery involves capital cost, power or energy requirements, maintenance and technically competent operation.
• Geological assessment remains essential because machinery cannot make a severely defective rock mass produce flawless blocks.
• Therefore Option D correctly states both a major advantage and an important limitation.
• Modern equipment such as wire saws, chain saws, hydraulic splitters and other cutting systems is important in dimension-stone production.
• However, machinery involves capital cost, power or energy requirements, maintenance and technically competent operation.
• Geological assessment remains essential because machinery cannot make a severely defective rock mass produce flawless blocks.
• Therefore Option D correctly states both a major advantage and an important limitation.
వివరణ:
Question 24
ప్రశ్న 24
Two otherwise similar quarry deposits contain equally good building stone. Quarry X has reliable drainage and direct road access, while Quarry Y suffers frequent water accumulation and requires a long difficult haul to the nearest usable road. Which conclusion is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Stone quality is fundamental, but quarry economics also depend strongly on operating conditions.
• Effective drainage helps maintain accessible and safer working areas and reduces interruptions associated with water accumulation.
• Good road access reduces the difficulty and cost of moving heavy stone blocks or quarried material to processing and construction locations.
• A technically excellent deposit can become uneconomic if extraction and transportation conditions are excessively difficult.
• Therefore Quarry X is generally more favourable on the stated operational factors, making Option B correct.
• Effective drainage helps maintain accessible and safer working areas and reduces interruptions associated with water accumulation.
• Good road access reduces the difficulty and cost of moving heavy stone blocks or quarried material to processing and construction locations.
• A technically excellent deposit can become uneconomic if extraction and transportation conditions are excessively difficult.
• Therefore Quarry X is generally more favourable on the stated operational factors, making Option B correct.
వివరణ:
Question 25
ప్రశ్న 25
A high-value marble deposit lies near structures where unnecessary vibration must be minimised, and the product is required as large sound blocks for slab manufacture. Which extraction philosophy is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
• Marble intended for slab manufacture has greatest value when recovered as large, sound blocks with limited unwanted fracturing.
• The proximity of vibration-sensitive structures creates an additional constraint on highly disruptive extraction methods.
• Mechanised cutting such as appropriate wire-saw technology can define block boundaries while preserving valuable material when the deposit conditions are suitable.
• Controlled splitting can then complement the cutting operation without treating fragmentation as the primary objective.
• Therefore Option C best integrates product quality, quarry geology and surrounding-site considerations.
• The proximity of vibration-sensitive structures creates an additional constraint on highly disruptive extraction methods.
• Mechanised cutting such as appropriate wire-saw technology can define block boundaries while preserving valuable material when the deposit conditions are suitable.
• Controlled splitting can then complement the cutting operation without treating fragmentation as the primary objective.
• Therefore Option C best integrates product quality, quarry geology and surrounding-site considerations.
వివరణ:
Answer Key సమాధానాల పట్టిక
-
Question 1 ప్రశ్న 1Answer: B. Extracting useful stone from its natural rock bed for engineering purposes సమాధానం: B.
-
Question 2 ప్రశ్న 2Answer: D. Quality and quantity of stone, geological structure, drainage, access and transport, availability of resources, and environmental or safety constraints సమాధానం: D.
-
Question 3 ప్రశ్న 3Answer: A. Comparatively soft stone occurs at shallow depth or as blocks that can be removed using ordinary excavation tools. సమాధానం: A.
-
Question 4 ప్రశ్న 4Answer: C. Remove the overburden and expose the sound rock formation. సమాధానం: C.
-
Question 5 ప్రశ్న 5Answer: B. Unequal thermal expansion of the heated surface layers helps them separate from the underlying rock. సమాధానం: B.
-
Question 6 ప్రశ్న 6Answer: D. Thermal stresses may weaken, crack or otherwise damage the stone and reduce the quality of recoverable blocks. సమాధానం: D.
-
Question 7 ప్రశ్న 7Answer: A. A rock mass having suitable joints, fissures, bedding or prepared splitting lines along which sound blocks can be detached సమాధానం: A.
-
Question 8 ప్రశ్న 8Answer: C. They can form planes of relatively low resistance and strongly influence block size, splitting behaviour and recovery. సమాధానం: C.
-
Question 9 ప్రశ్న 9Answer: B. Channels are mechanically cut around the required block so that it can subsequently be separated from its bed. సమాధానం: B.
-
Question 10 ప్రశ్న 10Answer: D. Controlled machine cutting or channeling followed by suitable block separation సమాధానం: D.
-
Question 11 ప్రశ్న 11Answer: A. It is a mechanised cutting method used to make controlled cuts and recover large blocks of stones such as granite or marble with comparatively limited unwanted fracturing. సమాధానం: A.
-
Question 12 ప్రశ్న 12Answer: C. Rapid breakage or fragmentation of hard rock masses where large quantities of broken stone are required and blasting is otherwise permissible. సమాధానం: C.
-
Question 13 ప్రశ్న 13Answer: B. It may introduce unwanted cracks and fragmentation, reducing the recovery of large sound blocks. సమాధానం: B.
-
Question 14 ప్రశ్న 14Answer: D. Prefer suitably assessed mechanical cutting or controlled splitting methods that minimise unnecessary vibration and preserve block quality. సమాధానం: D.
-
Question 15 ప్రశ్న 15Answer: A. 1-Q, 2-R, 3-S, 4-P సమాధానం: A.
-
Question 16 ప్రశ్న 16Answer: C. 1, 2 and 3 only సమాధానం: C.
-
Question 17 ప్రశ్న 17Answer: B. Diamond-wire cutting సమాధానం: B.
-
Question 18 ప్రశ్న 18Answer: A. Digging or excavation సమాధానం: A.
-
Question 19 ప్రశ్న 19Answer: D. Wedging or controlled splitting along favourable planes సమాధానం: D.
-
Question 20 ప్రశ్న 20Answer: B. Study the deposit and discontinuities → remove unsuitable overburden → establish a safe working face and selected extraction method → separate, handle and sort useful blocks సమాధానం: B.
-
Question 21 ప్రశ్న 21Answer: C. 65 percent సమాధానం: C.
-
Question 22 ప్రశ్న 22Answer: A. No single method is universally best; the choice should reflect geology, stone quality, required product, production rate, environmental constraints, safety and economics. సమాధానం: A.
-
Question 23 ప్రశ్న 23Answer: D. It can improve productivity and dimensional control, but requires suitable equipment, power, investment, maintenance and trained operation. సమాధానం: D.
-
Question 24 ప్రశ్న 24Answer: B. Quarry X is generally more favourable operationally because drainage and transportation materially affect quarry efficiency and cost. సమాధానం: B.
-
Question 25 ప్రశ్న 25Answer: C. Use suitably planned cutting and controlled splitting methods, such as modern wire-saw extraction where appropriate, to preserve block integrity and limit avoidable disturbance. సమాధానం: C.