Building material – Stone [Post-1]

Ø The rocks formed due to solidification of molten mass are called

a)     Aqueous rocks

b)    Sedimentary rocks

c)     Metamorphic rocks

d)    Igneous rocks

Ø The stone used for the construction of curved or ornamental works should be soft.

a)     Right

b)    wrong

Ø Granite is an example of

a)     Aqueous rocks

b)    Sedimentary rocks

c)     Metamorphic rocks

d)    Igneous rocks

Ø The attrition test on the stones is performed

a)     To determine the crushing strength of stone

b)    For assessing the resistance of stone to the sun, rain, winds etc.

c)     To ascertain the stability of the stone when exposed to acid fumes

d)    For determining the rate of wear of stone due to grinding action under traffic

Ø Solidification of molten magma at the surface of the earth results in the formation of

a)     Sedimentary rock

b)    Basalt and traps

c)     Granite

d)    Metamorphic rock

Ø For the construction of retaining walls, a………………. stone must be used.

a)     Soft

b)    Hard

c)     Heavy

d)    None of the above

Ø Solidification of molten magma within the earth’s crust results in the formation of

a)     Sedimentary rock

b)    Basalt and trap

c)     Granite

d)    Metamorphic rock

Ø The crushing strength of a stone depends upon its

a)     Texture

b)    Specific gravity

c)     Workability

d)    Both (a) and (b)

Ø Sedimentary rocks are formed due to

a)     Solidification of molten mass

b)    Gradual deposition of materials like sand, clay, generally by setting water

c)     Alternation of original stones under heat and pressure

d)    None of the above

Ø The dressing of stone is done

a)     Immediately after quarrying

b)    After seasoning

c)     After three months of quarrying

d)    Just before building