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
