500 Best Building Materials MCQ
Q49). Pick up the correct statement from the following:
a).In basic Bessemer process, the steel heats the converter
b).In open-hearth process, the furnace heats the steel
c).In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore
d).all the above.
Correct Answer:
all the above.
Explanation:
Q50). The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as
a).Cementation process
b).Crucible process
c).Bessemer process
d).Open hearth process.
Correct Answer:
Crucible process
Explanation:
Q51). The rocks in which argil (or clay) predominates, are called
a).sillicious rocks
b).argillaceous rocks
c).calcareous rocks
d).igneous rocks.
Correct Answer:
argillaceous rocks
Explanation:
Q52). A badly mixed cement concrete results in
a).segregation
b).bleeding
c).honey combing
d).none to these.
Correct Answer:
honey combing
Explanation:
Q53). Pick up the correct statement regarding low heat cement from the following:
a).It possesses less compressive strength
b).Its initial setting time is about one hour
c).Its final setting time is about 10 hours
d).all the above.
Correct Answer:
all the above.
Explanation:
Q54). Chemically, marble is known as
a).metamorphic rock
b).argillaceous rock
c).calcareous rock
d).silicious rock.
Correct Answer:
calcareous rock
Explanation:
Q55). Inner part of a timber log surrounding the pith, is called
a).sapwood
b).cambium layer
c).heart wood
d).none to these.
Correct Answer:
heart wood
Explanation:
Q56). The filler used in plastic bitumen, is
a).shale powder
b).talc powder
c).asbestos powder
d).plastic powder
Correct Answer:
asbestos powder
Explanation: