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401.	Circular finished stones are generally used for:(a) Pillar(b) Tombstone(c) Landscaping(d) ColumnI got this question in class test.Asked question is from Quarrying and Dressing of Stones topic in division Materials for Construction of Basic Civil Engineering
Answer» Right OPTION is (d) COLUMN For 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.

402.	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 stoneI have been asked this question in class test.I'd like to ask this question from Quarrying and Dressing of Stones topic in portion Materials for Construction of Basic Civil Engineering
Answer» The correct answer is (b) To MAKE transport of stones to site easy and ECONOMIC 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.

403.	Which type of dressing does the figure below represent?(a) Pitch faced dressing(b) Furrowed finish(c) Combed finish(d) Fine toolingI have been asked this question in final exam.My query is from Quarrying and Dressing of Stones in section Materials for Construction of Basic Civil Engineering
Answer» Right choice is (d) Fine tooling Easy explanation: Fine tooling involves removing PROJECTIONS till a fairly smooth surface is OBTAINED. In pitch faced dressing, the edges are levelled and the flaws on the face of the stone is allowed to remain. In furrowed finish, a fixed margin is sunk on all sides with a CENTRAL portion projecting. In the combed finish, a comb with steel teeth is rubbed on the surface.

404.	Which of the following is not an explosive used for blasting?(a) Gelignite(b) Gunpowder(c) Flash powder(d) NitrocelluloseThis question was addressed to me in quiz.My question is from Quarrying and Dressing of Stones in portion Materials for Construction of Basic Civil Engineering
Answer» The correct option is (c) Flash POWDER Easy explanation: Flash powder is used primarily in FIREWORKS and theatrical PYROTECHNICS. The other THREE are widely used in the QUARRYING field.

405.	Which of the following is a hand tool used for quarrying?(a) Plier(b) Hammer(c) Quarrying wire(d) XSMI have been asked this question during an interview.Query is from Quarrying and Dressing of Stones in chapter Materials for Construction of Basic Civil Engineering
Answer» Right option is (b) Hammer Best 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.

406.	Granite is a type of:(a) Plutonic rock(b) Metamorphic rock(c) Hypabyssal rock(d) Volcanic rockI had been asked this question by my school principal while I was bunking the class.Asked question is from Source and Classification of Stones in division Materials for Construction of Basic Civil Engineering
Answer» The CORRECT CHOICE is (a) PLUTONIC rock To explain I would SAY: Granite is formed at a slow rate of cooling of magma at considerable DEPTHS and so is a type of plutonic rock.

407.	Which of the following rocks are hard and durable?(a) Argillaceous rocks(b) Siliceous rocks(c) Calcareous rocks(d) Carbonaceous rocksThe question was asked in examination.I need to ask this question from Source and Classification of Stones in division Materials for Construction of Basic Civil Engineering
Answer» The correct answer is (b) Siliceous rocks 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).

408.	Foliated structure is very common in case of:(a) Sedimentary rocks(b) Plutonic rocks(c) Igneous rocks(d) Metamorphic rocksThis question was posed to me in an online quiz.Query is from Source and Classification of Stones in chapter Materials for Construction of Basic Civil Engineering
Answer» Right answer is (d) METAMORPHIC rocks To ELABORATE: Foliated rocks can split up into layers along a definite direction only. Sedimentary rocks are GENERALLY stratified and igneous rocks are UNSTRATIFIED.

409.	Which of the following is not a metamorphic change?(a) Calcite to schist(b) Limestone to marble(c) Shale to slate(d) Granite to gneissesI have been asked this question during an online exam.My enquiry is from Source and Classification of Stones in portion Materials for Construction of Basic Civil Engineering
Answer» Correct option is (a) Calcite to schist Explanation: Calcite is a carbonate mineral whereas schist is a METAMORPHIC ROCK formed by metamorphosis of mudstone/shale to the HIGHER DEGREE than slate.

410.	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 pressureI have been asked this question by my school principal while I was bunking the class.This interesting question is from Source and Classification of Stones in section Materials for Construction of Basic Civil Engineering
Answer» Right choice is (C) Increase in TEMPERATURE and pressure 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.

411.	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 suspensionI got this question in semester exam.This question is from Source and Classification of Stones topic in section Materials for Construction of Basic Civil Engineering
Answer» CORRECT OPTION is (d) INSOLUBLE weathered product is carried away in suspension To elaborate: 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.

412.	Which one of the following is not a classification of stones?(a) Physical Classification(b) Mineralogical Classification(c) Chemical Classification(d) Practical ClassificationThis question was addressed to me during an internship interview.This key question is from Source and Classification of Stones topic in division Materials for Construction of Basic Civil Engineering
Answer» Correct ANSWER is (b) Mineralogical CLASSIFICATION For 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.

413.	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 depthI had been asked this question in an interview.This is a very interesting question from Source and Classification of Stones in section Materials for Construction of Basic Civil Engineering
Answer» RIGHT choice is (B) Quick cooling of MAGMA at a shallow depth Easy 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.

414.	The hot molten material occurring naturally below the surface of the Earth is called:(a) Lava(b) Slag(c) Magma(d) TuffI had been asked this question in class test.This is a very interesting question from Source and Classification of Stones topic in chapter Materials for Construction of Basic Civil Engineering
Answer» RIGHT answer is (C) Magma For 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.

415.	Stones are obtained from rocks that are made up of:(a) Ores(b) Minerals(c) Chemical compounds(d) CrystalsI have been asked this question in exam.This interesting question is from Source and Classification of Stones in section Materials for Construction of Basic Civil Engineering
Answer» Correct OPTION is (B) Minerals To elaborate: Rocks are made up of minerals. They can be monomineralic (SINGLE MINERAL) or polymineralic (more than one mineral).

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