Civil engineer objective questions – Building Materials (Section-2)

26. Which of the following is the reason for the decrease in the use of stones as a building material

a ) Steel and R.C.C are less bulky and more durable

b ) Strength of stones cannot be rationally analyzed

c ) Stones are not conveniently available on plains

d ) All of the above

27. The solidification of molten magma when it reaches the surface of earth results in the formation of

a ) sedimentary rocks

b ) metamorphic rocks

c ) basalts and traps magma within the earth’s crust

d ) granite

28. The solidification of molten results in the formation of

a ) sedimentary rocks

b ) metamorphic rocks

c ) Slate

d ) granite, pegmatite

29. Identify the process responsible for the formation of sedimentary rocks

a ) solidification of molten mass of silicates below or at the surface of the earth

b ) changes in texture or mineral composition or both of igneous and sedimentary rocks due to high temperature and heavy pressure

c ) deposited layers of sand and silt subjected in enormous overburden pressures over geological times

d ) none of the above

30. Identify the process responsible for the formation of igneous rocks

a ) solidification of molten mass of silicates below or at the surface of earth

b ) changes in texture or mineral composition or both of igneous and sedimentary rocks due to high temperature and heavy pressure

c ) deposited layers of sand and silt subjected in enormous overburden pressures over geological times

d ) none of the above

31. Identify the process responsible for the formation of metamorphic rocks

a ) solidification of molten mass of silicates below or at the surface of earth

b ) changes in texture or mineral composition or both of igneous and sedimentary rocks due to high temperature and heavy pressure

c ) deposited layers of sand and silt subjected in enormous overburden pressures over geological times

d ) none of the above

32. Under metamorphism, which of the following change is correct

a ) granite changes into gneiss

b ) sand stone changes into quartzite

c ) limestone changes into marble

d ) all of the above

33. The argillaceous rocks have their principal constituents as

a ) lime

b ) clay.

c ) sand

d ) none of the above

34. The physical classification divides the rocks into

a ) calcareous , argillaceous and silicious

b ) organic , semi – organic , and inorganic

c ) igneous , sedimentary and metamorphic

d ) stratified , unstratified and foliated

35. Identify the chemical classification of rocks

a ) calcareous , argillaceous and silicious

b ) organic , semi – organic , and inorganic

c ) igneous , sedimentary and metamorphic

d ) stratified , unstratified and foliated

 36. Identify the geological classification of rocks

a ) calcareous , argillaceous and silicious

b ) organic , semi – organic , and inorganic

c ) igneous , sedimentary and metamorphic

d ) stratified , unstratified and foliated

37. The minerals found in rocks are

a ) quartz

b ) felspar

c ) mica

d ) all of the above

38. Slate is a metamorphic rocks obtained from structural change of

a ) shale

b ) granite

c ) sand stone

d ) marble

39. The rock having tendency to split in a definite direction is called

a ) stratified

b ) unstratified

c ) foliated

d ) all of the above

40. Quarry sap is found in

a ) fresh wood

b ) fresh stone

c ) fresh brick

d ) fresh lime

41. Brand’s test is done for finding the ……. of stone

a ) frost resistance

b ) dirty matter

c ) weather resistance

d ) all of the above

42. Mica , mainly , is composed of

a ) calcium carbonate

b ) magnesium and calcium silicate

c ) silica with oxygen

d ) potassium and aluminium silicate

43. Rocks having silica as main constituent are called

a ) calcareous rocks

b ) argillaceous rock

c ) silicious rock

d ) none of the above

44. The rock having calcium carbonate as main mineral constituent , is known as ,

a ) calcareous rocks

b ) argillaceous rock

c ) sillicious rock

d ) sandy rock

45. Kaoline ( china clay ) is a

a ) calcareous rocks

b ) argillaceous rock

c ) sillicious rock

d ) sandy rock

46. Trap is a

a ) metamorphic rock

b ) igneous rock

c ) granite rock

d ) sedimentary rock

47. The minimum hardness number for marble is about

a ) 3

b ) 8

c ) 5

d ) 10

48. Granite contains primarily

a ) quartz

b ) quartz and felspar

c ) mica

d ) quartz and mica

49. Common sand is a variety of

a ) calcite

b ) quartz

c ) felspar

d ) chlorite

 50. Shingle is

a ) decomposed laterite

b ) crushed granite

c ) water-bound pebbles

d ) air weathered rock

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