Please keep at least one language enabled. || కనీసం ఒక భాషను ఎంచుకోండి.
Question 1
ప్రశ్న 1
Four natural stones are being considered for exterior cladding at a coastal site exposed to salt-laden moisture and repeated wetting and drying. Which candidate is the most promising based on the information given?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Coastal cladding is exposed to moisture, dissolved salts and repeated wetting and drying, so durability depends on more than appearance. Low detrimental absorption and a sound pore structure reduce the ease with which salt-bearing water can penetrate the stone. Stable mineralogy and freedom from harmful cracks or veins further improve the prospects for durable performance. Polishing cannot compensate for a continuous structural defect or unsuitable pore system. Therefore the stone described in Option B is the most promising candidate for the stated exposure.
వివరణ:
Question 2
ప్రశ్న 2
A quarry produces expensive granite intended for large polished facade panels. Which processing route is most consistent with maximising usable block quality?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Large facade panels require sufficiently large and sound quarry blocks with minimal unwanted cracking. Controlled cutting or splitting is therefore preferable to a method whose principal objective is extensive fragmentation. The recovered blocks can then be sawn into slabs and brought to the specified dimensions and surface finish. Polishing is meaningful only after sound material of adequate geometry has been produced. Hence Option C correctly links quarrying, processing and final architectural use.
వివరణ:
Question 3
ప్రశ్న 3
A well-bedded sandstone is to be used for accurately dressed load-bearing ashlar masonry. Which combination of quarrying, processing and laying practice is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Sandstone commonly possesses bedding planes that influence splitting behaviour and directional strength. Recognising those planes during quarrying can improve block recovery and reduce unwanted fracture. Ashlar masonry additionally requires accurately dressed beds, joints and exposed faces. In load-bearing work, the natural bed should be appropriately oriented because the stone may behave differently parallel and perpendicular to bedding. Therefore Option A correctly integrates geological structure, extraction, dressing and masonry use.
వివరణ:
Question 4
ప్రశ్న 4
An interior entrance hall requires decorative flooring having a smooth reflective finish. Which combination is most appropriate when all materials are otherwise structurally adequate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
A reflective decorative floor requires a stone capable of being ground and polished uniformly. Suitable marble has a recrystallized texture that allows high-quality polished architectural surfaces to be produced. The material should also be sound and free from defects that could cause cracking or differential finishing. Friable, weathered or flaky stones are poor choices merely because they can be cut into approximately flat units. Therefore Option D is the appropriate combination of material and processing.
వివరణ:
Question 5
ప్రశ్న 5
Large stones are required for a river-training structure where durability, resistance to mechanical wear and soundness are more important than a decorative surface. Which approach is most rational?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
River-training work demands stone capable of resisting weathering, water action and mechanical wear. Sound dense varieties of granite or trap can provide the required durability when the particular quarry material satisfies the project requirements. A costly polished finish gives little functional benefit where the principal requirements are mass, integrity and resistance to deterioration. Cracks and excessive porosity remain undesirable even when the exterior appearance can be improved. Therefore Option B gives the appropriate property-and-processing decision.
వివరణ:
Question 6
ప్రశ్న 6
Two stones both satisfy the strength and durability requirements for an intricately carved exterior architectural feature. Stone X is fine-grained and moderately easy to dress, whereas Stone Y is extremely hard and causes severe tool wear and breakage during carving. Which selection is more rational?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Complex carving requires repeated cutting, shaping and finishing of the stone. Once both candidates already satisfy strength and durability requirements, excessive hardness can become an economic and workmanship disadvantage. A fine-grained moderately workable stone can permit sharper details with less tool wear and wastage. This does not mean that a weak or non-durable stone should be chosen merely because it is easy to cut. Therefore Stone X in Option C is the more rational choice for the stated work.
వివరణ:
Question 7
ప్రశ్న 7
Granite is proposed for exterior entrance steps that are frequently wet during rain. Which finishing decision is generally most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Exterior entrance steps must provide safe pedestrian performance as well as adequate durability. A mirror-polished surface may be attractive, but maximum gloss is not automatically appropriate where the stone is frequently wet. Suitable textured finishes can provide a more favourable walking surface when selected to meet the specified slip-resistance requirement. The finish must also remain compatible with the particular granite and anticipated weather exposure. Therefore Option A gives the appropriate engineering selection principle.
వివరణ:
Question 8
ప్రశ్న 8
A strongly banded gneiss is quarried for thin exterior cladding panels. Which processing decision is particularly important?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Gneiss commonly contains pronounced foliation or compositional banding that can make its behaviour directional. Thin panels are particularly sensitive to weaknesses that can encourage splitting or delamination. Quarrying and slab-sawing directions should therefore be planned with the rock fabric in mind. Polishing changes the exposed surface condition but does not eliminate internal anisotropy. Consequently Option D correctly connects the geological structure with extraction, cutting and final panel performance.
వివరణ:
Question 9
ప్రశ్న 9
A dimension-stone quarry separates 240 m³ of rock and recovers 156 m³ as saleable sound blocks. What is the block recovery by volume?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Block recovery is the volume of saleable blocks divided by the total volume of rock separated. The required ratio is therefore 156 divided by 240. This gives 0.65. Multiplication by 100 gives a recovery of 65 percent. Hence Option C is correct, and recovery is an important consideration when comparing extraction methods for valuable dimension stone.
వివరణ:
Question 10
ప్రశ్న 10
A quarried stone block has a mass of 12 tonnes before preliminary dressing. Rough dressing at the quarry removes 15 percent of its mass as unusable projections and waste. Assuming only the useful dressed block is transported, how much transport mass is avoided?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
The removed mass is 15 percent of the original 12 tonnes. Thus the mass removed is 0.15 × 12 = 1.8 tonnes. The useful dressed block would therefore have a mass of 10.2 tonnes before considering any later processing. Carrying out suitable preliminary dressing at the quarry can reduce transport of material that would otherwise be discarded. Therefore the avoided transport mass is 1.8 tonnes and Option B is correct.
వివరణ:
Question 11
ప్రశ్న 11
Two portions of the same hard-rock deposit are to be exploited: Area P will supply crushed aggregate, while Area Q contains large defect-free zones required for premium dimension stone. Which extraction philosophy is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Aggregate production and dimension-stone production have fundamentally different product objectives. Aggregate requires broken rock of manageable size, so preservation of very large intact blocks is generally unnecessary. Premium dimension stone derives value from recovering large sound pieces with limited unwanted fracture. Quarrying method should therefore reflect both the geological conditions and the required final product. Option D correctly assigns different extraction philosophies to the two areas.
వివరణ:
Question 12
ప్రశ్న 12
A block of otherwise high-quality granite develops a continuous crack during extraction. The block is proposed for a heavily loaded exposed ashlar unit after fine polishing. What is the correct decision?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
A continuous extraction crack can act as a serious plane of weakness within an otherwise strong stone. Fine tooling or polishing affects the surface finish but does not restore the internal structural continuity of the block. The crack may also provide a path for moisture and progressive deterioration in exposed work. If the defective portion can be completely trimmed away, a smaller sound unit may still be usable. Therefore Option A gives the appropriate engineering quality decision.
వివరణ:
Question 13
ప్రశ్న 13
A stratified stone is used in a wall carrying predominantly vertical compression. Which orientation principle is generally appropriate for the stone's natural bed?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Stratified stones can have different properties parallel and perpendicular to their natural bedding planes. In ordinary load-bearing masonry, they are generally placed on their natural bed rather than on edge. With predominantly vertical wall compression, this means the bedding planes are approximately horizontal and the load acts approximately normal to them. This orientation reduces the tendency for unsuitable splitting along the layers under normal service conditions. Therefore Option C states the conventional engineering principle.
వివరణ:
Question 14
ప్రశ్న 14
Which combination best matches the stone, processing approach and final use?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Granite intended for monumental or polished architectural work should ideally be recovered as sound blocks before sawing and surface finishing. Controlled block extraction helps preserve dimensions and minimise unwanted cracking. Slate roofing instead relies on sound splitting along cleavage rather than prior pulverisation. Basalt used as aggregate does not require mirror polishing, and high absorption is not a desirable objective for friable sandstone cladding. Therefore Option B is the only technically coherent stone-process-use combination.
వివరణ:
Question 15
ప్రశ్న 15
Which sequence represents the most logical overall processing route for high-quality dimension stone?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Geological and quality assessment should precede extraction because the location of joints, veins and defects influences recovery. An extraction method can then be selected to preserve the type and size of block required by the project. Sound blocks are subsequently cut or dressed to achieve the specified geometry. Surface finishing follows adequate dimensional preparation rather than preceding it. Therefore Option D gives the logical sequence from quarry planning to finished construction stone.
వివరణ:
Question 16
ప్రశ్న 16
Two granite deposits meet the minimum required intact-rock strength. Deposit X is heavily jointed at close spacing, while Deposit Y contains much larger sound zones with widely spaced discontinuities. Which is generally preferable for producing large facade slabs?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Intact-rock strength is only one factor governing suitability for dimension-stone production. Closely spaced joints limit the maximum size of blocks that can be recovered without natural discontinuities. Large sound zones with wider joint spacing offer a better opportunity to obtain slabs of substantial dimensions. Subsequent sawing and polishing cannot erase a joint passing through a block. Therefore Deposit Y in Option A is generally preferable for the stated product.
వివరణ:
Question 17
ప్రశ్న 17
An architect requires numerous sharp mouldings and intricate profiles in natural stone. Candidate X is extremely hard but difficult to work, while Candidate Y is sufficiently strong and durable, fine-grained and substantially easier to dress. Which material is more appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Intricate mouldings demand accurate removal of relatively small quantities of stone to create repeated detailed profiles. Excessive hardness can increase tool wear, production time and wastage even when it improves resistance to abrasion. Candidate Y already satisfies the essential strength and durability requirements stated in the question. Its fine grain and superior workability therefore provide a practical advantage for precise shaping. Consequently Option C is the more appropriate selection.
వివరణ:
Question 18
ప్రశ్న 18
A polished carbonate stone is proposed for an exposed surface subjected to recurring strongly acidic industrial condensate. What is the most appropriate response?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Polishing changes the physical condition and appearance of the exposed surface but does not change the fundamental mineral composition of the stone. Carbonate minerals such as calcite can react with acidic moisture and undergo surface deterioration. A high-quality polish may consequently lose its appearance and the underlying stone may progressively recede in severe exposure. Material compatibility with the environment must therefore be considered before deciding on the finish. Hence Option B is the correct engineering response.
వివరణ:
Question 19
ప్రశ్న 19
An exterior public-building facade requires a durable polished stone in an atmosphere where acid-related surface attack is a significant concern. Assuming comparable structural quality, which material is generally the more defensible starting choice?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
A polished facade must satisfy environmental durability requirements in addition to providing the required appearance. Carbonate-rich stones can be susceptible to acidic exposure because their constituent minerals may react chemically. Suitable granite and similar siliceous stones generally offer a more favourable starting point for this particular chemical exposure. Actual selection should still consider absorption, mineral stability, defects and project-specific test requirements. Therefore Option D is the most defensible choice among the stated alternatives.
వివరణ:
Question 20
ప్రశ్న 20
An engineer must qualify a natural stone for an exposed load-bearing facade and is concerned about strength, moisture uptake and long-term weathering. Which test programme is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
An exposed structural stone must satisfy more than one category of engineering performance. Strength testing addresses its ability to resist structural stresses, while absorption and porosity assessment provide information about moisture-related behaviour. Weathering or durability tests provide additional evidence about susceptibility to environmental deterioration. Inspection for cracks, veins and other defects must also complement laboratory results. Therefore the multi-property test programme in Option A is the appropriate approach.
వివరణ:
Question 21
ప్రశ్న 21
A raw dimension-stone block has a volume of 4.50 m³. After sawing, trimming and rejection of defective portions, 80 percent of the original volume remains as usable finished-stone material. What usable volume is obtained?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
The usable fraction is 80 percent of the original block volume. The required volume is therefore 0.80 × 4.50 m³. This gives 3.60 m³ of usable material. The remaining 0.90 m³ represents trimming, sawing or rejected material under the assumptions in the question. Hence Option C is correct.
వివరణ:
Question 22
ప్రశ్న 22
A sound slate deposit is being worked specifically for thin roofing units. Which combination most appropriately uses the natural characteristics of the stone?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
The principal advantage of suitable roofing slate is its ability to split into thin sheets along slaty cleavage. Quarrying and processing should make use of this natural fabric rather than destroy it unnecessarily. Once suitable thin units are obtained, they require the dimensions, edge treatment and quality appropriate to roofing. A mirror polish is not the fundamental requirement for traditional slate roofing. Therefore Option B most effectively relates the stone's structure to its extraction and final use.
వివరణ:
Question 23
ప్రశ్న 23
Dense sound basalt is being quarried primarily for road metal and coarse aggregate rather than dimension blocks. Which processing philosophy is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
The required end product is aggregate rather than large dimension-stone blocks. Consequently the extraction process does not need to preserve large rectangular blocks to the same extent as a premium slab quarry. The quarried rock can be reduced by crushing and separated into the required aggregate sizes by screening. The resulting aggregate must still satisfy the relevant strength, abrasion, shape and durability requirements for its intended pavement or concrete use. Therefore Option D correctly links the final product with the appropriate processing philosophy.
వివరణ:
Question 24
ప్రశ్న 24
A high-quality marble deposit intended for large polished slabs lies close to vibration-sensitive structures. Which extraction and processing strategy is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
Large polished marble slabs require the recovery of substantial sound quarry blocks with limited unwanted cracking. Nearby vibration-sensitive structures provide an additional reason to prefer a suitably controlled low-disturbance extraction method where geological conditions permit it. Modern cutting methods such as diamond-wire sawing can be used to define block boundaries with relatively controlled disturbance. The blocks are subsequently sawn, dimensioned and progressively finished before final polishing. Therefore Option A correctly integrates environmental constraints, quarrying method and finished-product requirements.
వివరణ:
Question 25
ప్రశ్న 25
A civic plaza requires durable natural-stone paving subjected to heavy pedestrian traffic and periodic rain. A nearby quarry contains sound dense granite suitable for dimension stone. Which complete engineering strategy is most appropriate?
Select an option first. || ముందుగా ఒక సమాధానాన్ని ఎంచుకోండి.
Explanation:
The plaza requires a stone that can withstand traffic wear, environmental exposure and repeated wetting. Sound granite from a suitable quarry can provide strong durable paving units, but intact block recovery and testing are still necessary. Controlled extraction and sawing help produce slabs of the required dimensions without unnecessary quarry-induced fractures. The walking surface should then be finished to satisfy the required service and slip-resistance conditions rather than merely maximising gloss. Therefore Option C provides the most complete integration of quarrying, material assessment, processing and final use.
వివరణ:
Answer Key సమాధానాల పట్టిక
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Question 1 ప్రశ్న 1Answer: B. A sound stone having low detrimental water absorption, stable mineralogy, no harmful veins and satisfactory salt-weathering performance సమాధానం: B.
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Question 2 ప్రశ్న 2Answer: C. Controlled block extraction by suitable cutting or splitting, followed by sawing, dimensional finishing and polishing of sound slabs సమాధానం: C.
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Question 3 ప్రశ్న 3Answer: A. Recognise the natural bedding during extraction, recover sound blocks with controlled splitting, dress the beds and joints accurately, and lay the stone with proper regard to its natural bed సమాధానం: A.
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Question 4 ప్రశ్న 4Answer: D. Sound marble capable of taking a uniform polish, processed into accurately finished slabs సమాధానం: D.
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Question 5 ప్రశ్న 5Answer: B. Select sound dense durable stone such as suitable granite or trap and use only the degree of dressing necessary for stable placement and proper masonry. సమాధానం: B.
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Question 6 ప్రశ్న 6Answer: C. Stone X because adequate workability becomes important when complex shaping is required and essential service properties are already satisfied సమాధానం: C.
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Question 7 ప్రశ్న 7Answer: A. Use a suitably textured finish that meets the required slip-resistance and durability performance rather than selecting the highest possible gloss. సమాధానం: A.
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Question 8 ప్రశ్న 8Answer: D. Examine foliation or banding during block extraction and slab cutting so that potentially weak planes are appropriately oriented relative to the panel and its fixings. సమాధానం: D.
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Question 9 ప్రశ్న 9Answer: C. 65 percent సమాధానం: C.
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Question 10 ప్రశ్న 10Answer: B. 1.8 tonnes సమాధానం: B.
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Question 11 ప్రశ్న 11Answer: D. A fragmentation-oriented method may be suitable for Area P where permitted, while controlled cutting or splitting is preferable in Area Q to preserve large sound blocks. సమాధానం: D.
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Question 12 ప్రశ్న 12Answer: A. Reject the cracked block for that use or remove the defective portion if a sound unit of adequate dimensions can still be obtained. సమాధానం: A.
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Question 13 ప్రశ్న 13Answer: C. The natural bed should generally be oriented approximately perpendicular to the principal line of pressure. సమాధానం: C.
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Question 14 ప్రశ్న 14Answer: B. Granite — controlled block extraction followed by suitable finishing — monumental or polished architectural work సమాధానం: B.
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Question 15 ప్రశ్న 15Answer: D. Assess deposit and defects → select suitable extraction method → recover sound blocks → saw or dress to required geometry → apply the specified surface finish → inspect and install సమాధానం: D.
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Question 16 ప్రశ్న 16Answer: A. Deposit Y, because recoverable block size and freedom from discontinuities are critical even when both intact rocks satisfy the strength requirement. సమాధానం: A.
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Question 17 ప్రశ్న 17Answer: C. Candidate Y because its combination of adequate service properties and better workability is more suitable for intricate dressing సమాధానం: C.
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Question 18 ప్రశ్న 18Answer: B. Reconsider the material selection because surface polishing does not remove the chemical susceptibility of carbonate minerals to acidic attack. సమాధానం: B.
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Question 19 ప్రశ్న 19Answer: D. Sound suitable granite or similar siliceous polished building stone rather than an acid-sensitive carbonate stone సమాధానం: D.
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Question 20 ప్రశ్న 20Answer: A. Use relevant standardized strength testing together with water-absorption or porosity assessment and appropriate weathering or durability evaluation. సమాధానం: A.
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Question 21 ప్రశ్న 21Answer: C. 3.60 m³ సమాధానం: C.
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Question 22 ప్రశ్న 22Answer: B. Extract and split suitable stone along its slaty cleavage to obtain thin units, followed by only the edge and surface preparation needed for roofing. సమాధానం: B.
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Question 23 ప్రశ్న 23Answer: D. Use an appropriately controlled bulk-rock extraction method where permitted, followed by crushing, screening and aggregate quality testing. సమాధానం: D.
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Question 24 ప్రశ్న 24Answer: A. Use suitably planned low-disturbance cutting such as appropriate wire-saw extraction, recover large sound blocks, saw them into slabs and polish only after dimensional preparation. సమాధానం: A.
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Question 25 ప్రశ్న 25Answer: C. Recover sound blocks with a controlled method, saw them into paving units, verify strength and wear or durability properties, and provide a suitably textured finish meeting the wet-service requirements. సమాధానం: C.